Finding the Fourth Proportional to 652,300.64, 978,760.18 and 315,152.32

Step by Step Solution

1. Step 1: Write the proportion equation
   652,300.64 : 978,760.18 = 315,152.32 : x
2. Step 2: Convert to fraction form
   652,300.64/978,760.18 = 315,152.32/x
3. Step 3: Cross multiply
   652,300.64x = 978,760.18 × 315,152.32
4. Step 4: Simplify right side
   652,300.64x = 308,458,541,450.62
5. Step 5: Solve for x
   x = 308,458,541,450.62/652,300.64
6. Step 6: Final answer
   x = 472,877.88