Finding the Fourth Proportional to 1,987.27, 2,742.59 and 1,148.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.27 : 2,742.59 = 1,148.01 : x
2. Step 2: Convert to fraction form
   1,987.27/2,742.59 = 1,148.01/x
3. Step 3: Cross multiply
   1,987.27x = 2,742.59 × 1,148.01
4. Step 4: Simplify right side
   1,987.27x = 3,148,520.75
5. Step 5: Solve for x
   x = 3,148,520.75/1,987.27
6. Step 6: Final answer
   x = 1,584.34