Finding the Fourth Proportional to 1,666.17, 2,498.65 and 742.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.17 : 2,498.65 = 742.37 : x
2. Step 2: Convert to fraction form
   1,666.17/2,498.65 = 742.37/x
3. Step 3: Cross multiply
   1,666.17x = 2,498.65 × 742.37
4. Step 4: Simplify right side
   1,666.17x = 1,854,908.45
5. Step 5: Solve for x
   x = 1,854,908.45/1,666.17
6. Step 6: Final answer
   x = 1,113.28