Finding the Fourth Proportional to 2,591.48, 3,886.04 and 742.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.48 : 3,886.04 = 742.17 : x
2. Step 2: Convert to fraction form
   2,591.48/3,886.04 = 742.17/x
3. Step 3: Cross multiply
   2,591.48x = 3,886.04 × 742.17
4. Step 4: Simplify right side
   2,591.48x = 2,884,089.59
5. Step 5: Solve for x
   x = 2,884,089.59/2,591.48
6. Step 6: Final answer
   x = 1,112.91