Finding the Fourth Proportional to 1,988.25, 2,743.57 and 1,148.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.25 : 2,743.57 = 1,148.88 : x
2. Step 2: Convert to fraction form
   1,988.25/2,743.57 = 1,148.88/x
3. Step 3: Cross multiply
   1,988.25x = 2,743.57 × 1,148.88
4. Step 4: Simplify right side
   1,988.25x = 3,152,044.43
5. Step 5: Solve for x
   x = 3,152,044.43/1,988.25
6. Step 6: Final answer
   x = 1,585.34