Finding the Fourth Proportional to 1,613.67, 2,227.55 and 1,090.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.67 : 2,227.55 = 1,090.41 : x
2. Step 2: Convert to fraction form
   1,613.67/2,227.55 = 1,090.41/x
3. Step 3: Cross multiply
   1,613.67x = 2,227.55 × 1,090.41
4. Step 4: Simplify right side
   1,613.67x = 2,428,937.34
5. Step 5: Solve for x
   x = 2,428,937.34/1,613.67
6. Step 6: Final answer
   x = 1,505.23