Finding the Fourth Proportional to 2,209.96, 3,314.16 and 1,591.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.96 : 3,314.16 = 1,591.80 : x
2. Step 2: Convert to fraction form
   2,209.96/3,314.16 = 1,591.80/x
3. Step 3: Cross multiply
   2,209.96x = 3,314.16 × 1,591.80
4. Step 4: Simplify right side
   2,209.96x = 5,275,479.89
5. Step 5: Solve for x
   x = 5,275,479.89/2,209.96
6. Step 6: Final answer
   x = 2,387.14