Finding the Fourth Proportional to 2,761.52, 4,141.86 and 913.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,761.52 : 4,141.86 = 913.91 : x
2. Step 2: Convert to fraction form
   2,761.52/4,141.86 = 913.91/x
3. Step 3: Cross multiply
   2,761.52x = 4,141.86 × 913.91
4. Step 4: Simplify right side
   2,761.52x = 3,785,266.56
5. Step 5: Solve for x
   x = 3,785,266.56/2,761.52
6. Step 6: Final answer
   x = 1,370.72