Finding the Fourth Proportional to 1,445.48, 1,994.77 and 782.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.48 : 1,994.77 = 782.34 : x
2. Step 2: Convert to fraction form
   1,445.48/1,994.77 = 782.34/x
3. Step 3: Cross multiply
   1,445.48x = 1,994.77 × 782.34
4. Step 4: Simplify right side
   1,445.48x = 1,560,590.88
5. Step 5: Solve for x
   x = 1,560,590.88/1,445.48
6. Step 6: Final answer
   x = 1,079.63