Finding the Fourth Proportional to 1,613.31, 2,419.43 and 573.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.31 : 2,419.43 = 573.12 : x
2. Step 2: Convert to fraction form
   1,613.31/2,419.43 = 573.12/x
3. Step 3: Cross multiply
   1,613.31x = 2,419.43 × 573.12
4. Step 4: Simplify right side
   1,613.31x = 1,386,620.86
5. Step 5: Solve for x
   x = 1,386,620.86/1,613.31
6. Step 6: Final answer
   x = 859.49