Finding the Fourth Proportional to 1,111.29, 1,666.98 and 494.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.29 : 1,666.98 = 494.88 : x
2. Step 2: Convert to fraction form
   1,111.29/1,666.98 = 494.88/x
3. Step 3: Cross multiply
   1,111.29x = 1,666.98 × 494.88
4. Step 4: Simplify right side
   1,111.29x = 824,955.06
5. Step 5: Solve for x
   x = 824,955.06/1,111.29
6. Step 6: Final answer
   x = 742.34