Finding the Fourth Proportional to 1,042.50, 1,559.06 and 795.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.50 : 1,559.06 = 795.78 : x
2. Step 2: Convert to fraction form
   1,042.50/1,559.06 = 795.78/x
3. Step 3: Cross multiply
   1,042.50x = 1,559.06 × 795.78
4. Step 4: Simplify right side
   1,042.50x = 1,240,664.79
5. Step 5: Solve for x
   x = 1,240,664.79/1,042.50
6. Step 6: Final answer
   x = 1,190.09