Finding the Fourth Proportional to 1,505.18, 2,074.99 and 1,256.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505.18 : 2,074.99 = 1,256.10 : x
2. Step 2: Convert to fraction form
   1,505.18/2,074.99 = 1,256.10/x
3. Step 3: Cross multiply
   1,505.18x = 2,074.99 × 1,256.10
4. Step 4: Simplify right side
   1,505.18x = 2,606,391.80
5. Step 5: Solve for x
   x = 2,606,391.80/1,505.18
6. Step 6: Final answer
   x = 1,731.62