Finding the Fourth Proportional to 1,150,410.78, 1,587,572.19 and 667,261.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150,410.78 : 1,587,572.19 = 667,261.98 : x
2. Step 2: Convert to fraction form
   1,150,410.78/1,587,572.19 = 667,261.98/x
3. Step 3: Cross multiply
   1,150,410.78x = 1,587,572.19 × 667,261.98
4. Step 4: Simplify right side
   1,150,410.78x = 1,059,326,562,892.34
5. Step 5: Solve for x
   x = 1,059,326,562,892.34/1,150,410.78
6. Step 6: Final answer
   x = 920,824.61