Finding the Fourth Proportional to 1,815.59, 2,505.35 and 1,008.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.59 : 2,505.35 = 1,008.07 : x
2. Step 2: Convert to fraction form
   1,815.59/2,505.35 = 1,008.07/x
3. Step 3: Cross multiply
   1,815.59x = 2,505.35 × 1,008.07
4. Step 4: Simplify right side
   1,815.59x = 2,525,564.43
5. Step 5: Solve for x
   x = 2,525,564.43/1,815.59
6. Step 6: Final answer
   x = 1,391.04