Finding the Fourth Proportional to 2,872.37, 4,308.15 and 924.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.37 : 4,308.15 = 924.32 : x
2. Step 2: Convert to fraction form
   2,872.37/4,308.15 = 924.32/x
3. Step 3: Cross multiply
   2,872.37x = 4,308.15 × 924.32
4. Step 4: Simplify right side
   2,872.37x = 3,982,109.21
5. Step 5: Solve for x
   x = 3,982,109.21/2,872.37
6. Step 6: Final answer
   x = 1,386.35