Finding the Fourth Proportional to 884,300.55, 1,326,731.20 and 315,669.46

Step by Step Solution

1. Step 1: Write the proportion equation
   884,300.55 : 1,326,731.20 = 315,669.46 : x
2. Step 2: Convert to fraction form
   884,300.55/1,326,731.20 = 315,669.46/x
3. Step 3: Cross multiply
   884,300.55x = 1,326,731.20 × 315,669.46
4. Step 4: Simplify right side
   884,300.55x = 418,808,521,469.15
5. Step 5: Solve for x
   x = 418,808,521,469.15/884,300.55
6. Step 6: Final answer
   x = 473,604.28