Finding the Fourth Proportional to 2,880.34, 4,320.42 and 932.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.34 : 4,320.42 = 932.50 : x
2. Step 2: Convert to fraction form
   2,880.34/4,320.42 = 932.50/x
3. Step 3: Cross multiply
   2,880.34x = 4,320.42 × 932.50
4. Step 4: Simplify right side
   2,880.34x = 4,028,791.65
5. Step 5: Solve for x
   x = 4,028,791.65/2,880.34
6. Step 6: Final answer
   x = 1,398.72