Finding the Fourth Proportional to 1,055,404.64, 1,456,614.73 and 668,256.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,404.64 : 1,456,614.73 = 668,256.05 : x
2. Step 2: Convert to fraction form
   1,055,404.64/1,456,614.73 = 668,256.05/x
3. Step 3: Cross multiply
   1,055,404.64x = 1,456,614.73 × 668,256.05
4. Step 4: Simplify right side
   1,055,404.64x = 973,391,605,841.62
5. Step 5: Solve for x
   x = 973,391,605,841.62/1,055,404.64
6. Step 6: Final answer
   x = 922,292.33