Finding the Fourth Proportional to 1,042.30, 1,438.55 and 793.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.30 : 1,438.55 = 793.22 : x
2. Step 2: Convert to fraction form
   1,042.30/1,438.55 = 793.22/x
3. Step 3: Cross multiply
   1,042.30x = 1,438.55 × 793.22
4. Step 4: Simplify right side
   1,042.30x = 1,141,086.63
5. Step 5: Solve for x
   x = 1,141,086.63/1,042.30
6. Step 6: Final answer
   x = 1,094.78