Finding the Fourth Proportional to 1,445.88, 1,995.30 and 782.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.88 : 1,995.30 = 782.73 : x
2. Step 2: Convert to fraction form
   1,445.88/1,995.30 = 782.73/x
3. Step 3: Cross multiply
   1,445.88x = 1,995.30 × 782.73
4. Step 4: Simplify right side
   1,445.88x = 1,561,781.17
5. Step 5: Solve for x
   x = 1,561,781.17/1,445.88
6. Step 6: Final answer
   x = 1,080.16