Finding the Fourth Proportional to 1,154,870.43, 1,593,731.51 and 638,659.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154,870.43 : 1,593,731.51 = 638,659.05 : x
2. Step 2: Convert to fraction form
   1,154,870.43/1,593,731.51 = 638,659.05/x
3. Step 3: Cross multiply
   1,154,870.43x = 1,593,731.51 × 638,659.05
4. Step 4: Simplify right side
   1,154,870.43x = 1,017,851,048,938.37
5. Step 5: Solve for x
   x = 1,017,851,048,938.37/1,154,870.43
6. Step 6: Final answer
   x = 881,355.19