Finding the Fourth Proportional to 2,259.53, 3,117.98 and 1,315.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.53 : 3,117.98 = 1,315.32 : x
2. Step 2: Convert to fraction form
   2,259.53/3,117.98 = 1,315.32/x
3. Step 3: Cross multiply
   2,259.53x = 3,117.98 × 1,315.32
4. Step 4: Simplify right side
   2,259.53x = 4,101,134.88
5. Step 5: Solve for x
   x = 4,101,134.88/2,259.53
6. Step 6: Final answer
   x = 1,815.04