Finding the Fourth Proportional to 1,298,865,185.48, 1,792,567,551.82 and 790,264,005.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,865,185.48 : 1,792,567,551.82 = 790,264,005.76 : x
2. Step 2: Convert to fraction form
   1,298,865,185.48/1,792,567,551.82 = 790,264,005.76/x
3. Step 3: Cross multiply
   1,298,865,185.48x = 1,792,567,551.82 × 790,264,005.76
4. Step 4: Simplify right side
   1,298,865,185.48x = 1,416,601,614,096,669,440
5. Step 5: Solve for x
   x = 1,416,601,614,096,669,440/1,298,865,185.48
6. Step 6: Final answer
   x = 1,090,645,611.21