Finding the Fourth Proportional to 867,323.31, 1,196,915.59 and 480,145.15

Step by Step Solution

1. Step 1: Write the proportion equation
   867,323.31 : 1,196,915.59 = 480,145.15 : x
2. Step 2: Convert to fraction form
   867,323.31/1,196,915.59 = 480,145.15/x
3. Step 3: Cross multiply
   867,323.31x = 1,196,915.59 × 480,145.15
4. Step 4: Simplify right side
   867,323.31x = 574,693,213,105.78
5. Step 5: Solve for x
   x = 574,693,213,105.78/867,323.31
6. Step 6: Final answer
   x = 662,605.52