Finding the Fourth Proportional to 2,591.78, 3,576.29 and 1,543.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.78 : 3,576.29 = 1,543.86 : x
2. Step 2: Convert to fraction form
   2,591.78/3,576.29 = 1,543.86/x
3. Step 3: Cross multiply
   2,591.78x = 3,576.29 × 1,543.86
4. Step 4: Simplify right side
   2,591.78x = 5,521,283.36
5. Step 5: Solve for x
   x = 5,521,283.36/2,591.78
6. Step 6: Final answer
   x = 2,130.31