Finding the Fourth Proportional to 1,138,915.82, 1,572,015.71 and 708,940.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,915.82 : 1,572,015.71 = 708,940.69 : x
2. Step 2: Convert to fraction form
   1,138,915.82/1,572,015.71 = 708,940.69/x
3. Step 3: Cross multiply
   1,138,915.82x = 1,572,015.71 × 708,940.69
4. Step 4: Simplify right side
   1,138,915.82x = 1,114,465,899,980.55
5. Step 5: Solve for x
   x = 1,114,465,899,980.55/1,138,915.82
6. Step 6: Final answer
   x = 978,532.28