Finding the Fourth Proportional to 1,224.15, 1,826.31 and 1,048.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.15 : 1,826.31 = 1,048.78 : x
2. Step 2: Convert to fraction form
   1,224.15/1,826.31 = 1,048.78/x
3. Step 3: Cross multiply
   1,224.15x = 1,826.31 × 1,048.78
4. Step 4: Simplify right side
   1,224.15x = 1,915,397.40
5. Step 5: Solve for x
   x = 1,915,397.40/1,224.15
6. Step 6: Final answer
   x = 1,564.68