Finding the Fourth Proportional to 2,591.78, 3,576.67 and 1,412.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.78 : 3,576.67 = 1,412.86 : x
2. Step 2: Convert to fraction form
   2,591.78/3,576.67 = 1,412.86/x
3. Step 3: Cross multiply
   2,591.78x = 3,576.67 × 1,412.86
4. Step 4: Simplify right side
   2,591.78x = 5,053,333.98
5. Step 5: Solve for x
   x = 5,053,333.98/2,591.78
6. Step 6: Final answer
   x = 1,949.75