Finding the Fourth Proportional to 2,128,510.60, 2,936,957.86 and 1,257,487.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,510.60 : 2,936,957.86 = 1,257,487.10 : x
2. Step 2: Convert to fraction form
   2,128,510.60/2,936,957.86 = 1,257,487.10/x
3. Step 3: Cross multiply
   2,128,510.60x = 2,936,957.86 × 1,257,487.10
4. Step 4: Simplify right side
   2,128,510.60x = 3,693,186,622,193.61
5. Step 5: Solve for x
   x = 3,693,186,622,193.61/2,128,510.60
6. Step 6: Final answer
   x = 1,735,103.70