Finding the Fourth Proportional to 1,025,580.22, 1,538,516.10 and 315,667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,580.22 : 1,538,516.10 = 315,667.42 : x
2. Step 2: Convert to fraction form
   1,025,580.22/1,538,516.10 = 315,667.42/x
3. Step 3: Cross multiply
   1,025,580.22x = 1,538,516.10 × 315,667.42
4. Step 4: Simplify right side
   1,025,580.22x = 485,659,407,915.46
5. Step 5: Solve for x
   x = 485,659,407,915.46/1,025,580.22
6. Step 6: Final answer
   x = 473,546.00