Finding the Fourth Proportional to 2,320.47, 3,199.84 and 1,613.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.47 : 3,199.84 = 1,613.11 : x
2. Step 2: Convert to fraction form
   2,320.47/3,199.84 = 1,613.11/x
3. Step 3: Cross multiply
   2,320.47x = 3,199.84 × 1,613.11
4. Step 4: Simplify right side
   2,320.47x = 5,161,693.90
5. Step 5: Solve for x
   x = 5,161,693.90/2,320.47
6. Step 6: Final answer
   x = 2,224.42