Finding the Fourth Proportional to 1,411.54, 1,947.94 and 782.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.54 : 1,947.94 = 782.12 : x
2. Step 2: Convert to fraction form
   1,411.54/1,947.94 = 782.12/x
3. Step 3: Cross multiply
   1,411.54x = 1,947.94 × 782.12
4. Step 4: Simplify right side
   1,411.54x = 1,523,525.75
5. Step 5: Solve for x
   x = 1,523,525.75/1,411.54
6. Step 6: Final answer
   x = 1,079.34