Finding the Fourth Proportional to 1,613.99, 2,227.35 and 1,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.99 : 2,227.35 = 1,142.72 : x
2. Step 2: Convert to fraction form
   1,613.99/2,227.35 = 1,142.72/x
3. Step 3: Cross multiply
   1,613.99x = 2,227.35 × 1,142.72
4. Step 4: Simplify right side
   1,613.99x = 2,545,237.39
5. Step 5: Solve for x
   x = 2,545,237.39/1,613.99
6. Step 6: Final answer
   x = 1,576.98