Finding the Fourth Proportional to 1,344.57, 1,856.01 and 878.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.57 : 1,856.01 = 878.82 : x
2. Step 2: Convert to fraction form
   1,344.57/1,856.01 = 878.82/x
3. Step 3: Cross multiply
   1,344.57x = 1,856.01 × 878.82
4. Step 4: Simplify right side
   1,344.57x = 1,631,098.71
5. Step 5: Solve for x
   x = 1,631,098.71/1,344.57
6. Step 6: Final answer
   x = 1,213.10