Finding the Fourth Proportional to 1,913,061.58, 2,640,144.38 and 1,053,621.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913,061.58 : 2,640,144.38 = 1,053,621.62 : x
2. Step 2: Convert to fraction form
   1,913,061.58/2,640,144.38 = 1,053,621.62/x
3. Step 3: Cross multiply
   1,913,061.58x = 2,640,144.38 × 1,053,621.62
4. Step 4: Simplify right side
   1,913,061.58x = 2,781,713,198,689.50
5. Step 5: Solve for x
   x = 2,781,713,198,689.50/1,913,061.58
6. Step 6: Final answer
   x = 1,454,063.60