Finding the Fourth Proportional to 2,320.31, 3,200.26 and 1,612.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.31 : 3,200.26 = 1,612.15 : x
2. Step 2: Convert to fraction form
   2,320.31/3,200.26 = 1,612.15/x
3. Step 3: Cross multiply
   2,320.31x = 3,200.26 × 1,612.15
4. Step 4: Simplify right side
   2,320.31x = 5,159,299.16
5. Step 5: Solve for x
   x = 5,159,299.16/2,320.31
6. Step 6: Final answer
   x = 2,223.54