Finding the Fourth Proportional to 1,008,404.54, 1,391,650.18 and 555,695.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,404.54 : 1,391,650.18 = 555,695.54 : x
2. Step 2: Convert to fraction form
   1,008,404.54/1,391,650.18 = 555,695.54/x
3. Step 3: Cross multiply
   1,008,404.54x = 1,391,650.18 × 555,695.54
4. Step 4: Simplify right side
   1,008,404.54x = 773,333,798,266.20
5. Step 5: Solve for x
   x = 773,333,798,266.20/1,008,404.54
6. Step 6: Final answer
   x = 766,888.45