Finding the Fourth Proportional to 2,101.24, 2,899.56 and 1,315

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.24 : 2,899.56 = 1,315 : x
2. Step 2: Convert to fraction form
   2,101.24/2,899.56 = 1,315/x
3. Step 3: Cross multiply
   2,101.24x = 2,899.56 × 1,315
4. Step 4: Simplify right side
   2,101.24x = 3,812,921.40
5. Step 5: Solve for x
   x = 3,812,921.40/2,101.24
6. Step 6: Final answer
   x = 1,814.61