Finding the Fourth Proportional to 1,989.86, 2,746.35 and 1,150.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.86 : 2,746.35 = 1,150.43 : x
2. Step 2: Convert to fraction form
   1,989.86/2,746.35 = 1,150.43/x
3. Step 3: Cross multiply
   1,989.86x = 2,746.35 × 1,150.43
4. Step 4: Simplify right side
   1,989.86x = 3,159,469.70
5. Step 5: Solve for x
   x = 3,159,469.70/1,989.86
6. Step 6: Final answer
   x = 1,587.79