Finding the Fourth Proportional to 1,852.52, 2,778.82 and 878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.52 : 2,778.82 = 878.72 : x
2. Step 2: Convert to fraction form
   1,852.52/2,778.82 = 878.72/x
3. Step 3: Cross multiply
   1,852.52x = 2,778.82 × 878.72
4. Step 4: Simplify right side
   1,852.52x = 2,441,804.71
5. Step 5: Solve for x
   x = 2,441,804.71/1,852.52
6. Step 6: Final answer
   x = 1,318.10