Finding the Fourth Proportional to 2,591.86, 3,576.78 and 1,412.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.86 : 3,576.78 = 1,412.89 : x
2. Step 2: Convert to fraction form
   2,591.86/3,576.78 = 1,412.89/x
3. Step 3: Cross multiply
   2,591.86x = 3,576.78 × 1,412.89
4. Step 4: Simplify right side
   2,591.86x = 5,053,596.69
5. Step 5: Solve for x
   x = 5,053,596.69/2,591.86
6. Step 6: Final answer
   x = 1,949.80