Finding the Fourth Proportional to 1,505.94, 2,078.46 and 876.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505.94 : 2,078.46 = 876.60 : x
2. Step 2: Convert to fraction form
   1,505.94/2,078.46 = 876.60/x
3. Step 3: Cross multiply
   1,505.94x = 2,078.46 × 876.60
4. Step 4: Simplify right side
   1,505.94x = 1,821,978.04
5. Step 5: Solve for x
   x = 1,821,978.04/1,505.94
6. Step 6: Final answer
   x = 1,209.86