Finding the Fourth Proportional to 1,411.24, 1,947.56 and 790.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.24 : 1,947.56 = 790.24 : x
2. Step 2: Convert to fraction form
   1,411.24/1,947.56 = 790.24/x
3. Step 3: Cross multiply
   1,411.24x = 1,947.56 × 790.24
4. Step 4: Simplify right side
   1,411.24x = 1,539,039.81
5. Step 5: Solve for x
   x = 1,539,039.81/1,411.24
6. Step 6: Final answer
   x = 1,090.56