Finding the Fourth Proportional to 1,150,443.78, 1,587,617.73 and 667,294.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150,443.78 : 1,587,617.73 = 667,294.98 : x
2. Step 2: Convert to fraction form
   1,150,443.78/1,587,617.73 = 667,294.98/x
3. Step 3: Cross multiply
   1,150,443.78x = 1,587,617.73 × 667,294.98
4. Step 4: Simplify right side
   1,150,443.78x = 1,059,409,341,388.00
5. Step 5: Solve for x
   x = 1,059,409,341,388.00/1,150,443.78
6. Step 6: Final answer
   x = 920,870.15