Finding the Fourth Proportional to 1,445.72, 1,994.36 and 847.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.72 : 1,994.36 = 847.82 : x
2. Step 2: Convert to fraction form
   1,445.72/1,994.36 = 847.82/x
3. Step 3: Cross multiply
   1,445.72x = 1,994.36 × 847.82
4. Step 4: Simplify right side
   1,445.72x = 1,690,844.08
5. Step 5: Solve for x
   x = 1,690,844.08/1,445.72
6. Step 6: Final answer
   x = 1,169.56