Finding the Fourth Proportional to 1,610.09, 2,221.17 and 1,113.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.09 : 2,221.17 = 1,113.42 : x
2. Step 2: Convert to fraction form
   1,610.09/2,221.17 = 1,113.42/x
3. Step 3: Cross multiply
   1,610.09x = 2,221.17 × 1,113.42
4. Step 4: Simplify right side
   1,610.09x = 2,473,095.10
5. Step 5: Solve for x
   x = 2,473,095.10/1,610.09
6. Step 6: Final answer
   x = 1,536.00