Finding the Fourth Proportional to 1,411.82, 1,948.28 and 790.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.82 : 1,948.28 = 790.82 : x
2. Step 2: Convert to fraction form
   1,411.82/1,948.28 = 790.82/x
3. Step 3: Cross multiply
   1,411.82x = 1,948.28 × 790.82
4. Step 4: Simplify right side
   1,411.82x = 1,540,738.79
5. Step 5: Solve for x
   x = 1,540,738.79/1,411.82
6. Step 6: Final answer
   x = 1,091.31