Finding the Fourth Proportional to 838,356.21, 1,156,931.73 and 456,382.89

Step by Step Solution

1. Step 1: Write the proportion equation
   838,356.21 : 1,156,931.73 = 456,382.89 : x
2. Step 2: Convert to fraction form
   838,356.21/1,156,931.73 = 456,382.89/x
3. Step 3: Cross multiply
   838,356.21x = 1,156,931.73 × 456,382.89
4. Step 4: Simplify right side
   838,356.21x = 528,003,846,470.10
5. Step 5: Solve for x
   x = 528,003,846,470.10/838,356.21
6. Step 6: Final answer
   x = 629,808.48