Finding the Fourth Proportional to 1,494.05, 2,235.60 and 878.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.05 : 2,235.60 = 878.04 : x
2. Step 2: Convert to fraction form
   1,494.05/2,235.60 = 878.04/x
3. Step 3: Cross multiply
   1,494.05x = 2,235.60 × 878.04
4. Step 4: Simplify right side
   1,494.05x = 1,962,946.22
5. Step 5: Solve for x
   x = 1,962,946.22/1,494.05
6. Step 6: Final answer
   x = 1,313.85