Finding the Fourth Proportional to 1,915,445.69, 2,643,283.55 and 1,056,085.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,445.69 : 2,643,283.55 = 1,056,085.91 : x
2. Step 2: Convert to fraction form
   1,915,445.69/2,643,283.55 = 1,056,085.91/x
3. Step 3: Cross multiply
   1,915,445.69x = 2,643,283.55 × 1,056,085.91
4. Step 4: Simplify right side
   1,915,445.69x = 2,791,534,494,792.93
5. Step 5: Solve for x
   x = 2,791,534,494,792.93/1,915,445.69
6. Step 6: Final answer
   x = 1,457,381.18