Finding the Fourth Proportional to 1,445.99, 1,995.46 and 782.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.99 : 1,995.46 = 782.84 : x
2. Step 2: Convert to fraction form
   1,445.99/1,995.46 = 782.84/x
3. Step 3: Cross multiply
   1,445.99x = 1,995.46 × 782.84
4. Step 4: Simplify right side
   1,445.99x = 1,562,128.94
5. Step 5: Solve for x
   x = 1,562,128.94/1,445.99
6. Step 6: Final answer
   x = 1,080.32