Finding the Fourth Proportional to 740.83, 1,111.18 and 253.86

Step by Step Solution

1. Step 1: Write the proportion equation
   740.83 : 1,111.18 = 253.86 : x
2. Step 2: Convert to fraction form
   740.83/1,111.18 = 253.86/x
3. Step 3: Cross multiply
   740.83x = 1,111.18 × 253.86
4. Step 4: Simplify right side
   740.83x = 282,082.89
5. Step 5: Solve for x
   x = 282,082.89/740.83
6. Step 6: Final answer
   x = 380.77