Finding the Fourth Proportional to 1,488,088.10, 2,232,650.55 and 647,243.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488,088.10 : 2,232,650.55 = 647,243.30 : x
2. Step 2: Convert to fraction form
   1,488,088.10/2,232,650.55 = 647,243.30/x
3. Step 3: Cross multiply
   1,488,088.10x = 2,232,650.55 × 647,243.30
4. Step 4: Simplify right side
   1,488,088.10x = 1,445,068,109,728.82
5. Step 5: Solve for x
   x = 1,445,068,109,728.82/1,488,088.10
6. Step 6: Final answer
   x = 971,090.43