Finding the Fourth Proportional to 1,111.12, 1,666.50 and 494.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.12 : 1,666.50 = 494.68 : x
2. Step 2: Convert to fraction form
   1,111.12/1,666.50 = 494.68/x
3. Step 3: Cross multiply
   1,111.12x = 1,666.50 × 494.68
4. Step 4: Simplify right side
   1,111.12x = 824,384.22
5. Step 5: Solve for x
   x = 824,384.22/1,111.12
6. Step 6: Final answer
   x = 741.94