Finding the Fourth Proportional to 1,111.28, 1,666.20 and 746.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.28 : 1,666.20 = 746.32 : x
2. Step 2: Convert to fraction form
   1,111.28/1,666.20 = 746.32/x
3. Step 3: Cross multiply
   1,111.28x = 1,666.20 × 746.32
4. Step 4: Simplify right side
   1,111.28x = 1,243,518.38
5. Step 5: Solve for x
   x = 1,243,518.38/1,111.28
6. Step 6: Final answer
   x = 1,119.00