Finding the Fourth Proportional to 1,445.50, 1,993.98 and 886.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.50 : 1,993.98 = 886.24 : x
2. Step 2: Convert to fraction form
   1,445.50/1,993.98 = 886.24/x
3. Step 3: Cross multiply
   1,445.50x = 1,993.98 × 886.24
4. Step 4: Simplify right side
   1,445.50x = 1,767,144.84
5. Step 5: Solve for x
   x = 1,767,144.84/1,445.50
6. Step 6: Final answer
   x = 1,222.51