Finding the Fourth Proportional to 1,047.36, 1,445.84 and 798.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.36 : 1,445.84 = 798.72 : x
2. Step 2: Convert to fraction form
   1,047.36/1,445.84 = 798.72/x
3. Step 3: Cross multiply
   1,047.36x = 1,445.84 × 798.72
4. Step 4: Simplify right side
   1,047.36x = 1,154,821.32
5. Step 5: Solve for x
   x = 1,154,821.32/1,047.36
6. Step 6: Final answer
   x = 1,102.60