Finding the Fourth Proportional to 2,591.80, 3,576.71 and 1,412.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.80 : 3,576.71 = 1,412.87 : x
2. Step 2: Convert to fraction form
   2,591.80/3,576.71 = 1,412.87/x
3. Step 3: Cross multiply
   2,591.80x = 3,576.71 × 1,412.87
4. Step 4: Simplify right side
   2,591.80x = 5,053,426.26
5. Step 5: Solve for x
   x = 5,053,426.26/2,591.80
6. Step 6: Final answer
   x = 1,949.77