Finding the Fourth Proportional to 1,988.50, 2,743.71 and 1,149.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.50 : 2,743.71 = 1,149.07 : x
2. Step 2: Convert to fraction form
   1,988.50/2,743.71 = 1,149.07/x
3. Step 3: Cross multiply
   1,988.50x = 2,743.71 × 1,149.07
4. Step 4: Simplify right side
   1,988.50x = 3,152,714.85
5. Step 5: Solve for x
   x = 3,152,714.85/1,988.50
6. Step 6: Final answer
   x = 1,585.47