Finding the Fourth Proportional to 2,591.15, 3,575.78 and 1,412.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.15 : 3,575.78 = 1,412.23 : x
2. Step 2: Convert to fraction form
   2,591.15/3,575.78 = 1,412.23/x
3. Step 3: Cross multiply
   2,591.15x = 3,575.78 × 1,412.23
4. Step 4: Simplify right side
   2,591.15x = 5,049,823.79
5. Step 5: Solve for x
   x = 5,049,823.79/2,591.15
6. Step 6: Final answer
   x = 1,948.87