Finding the Fourth Proportional to 1,987.32, 2,743.42 and 1,191.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.32 : 2,743.42 = 1,191.02 : x
2. Step 2: Convert to fraction form
   1,987.32/2,743.42 = 1,191.02/x
3. Step 3: Cross multiply
   1,987.32x = 2,743.42 × 1,191.02
4. Step 4: Simplify right side
   1,987.32x = 3,267,468.09
5. Step 5: Solve for x
   x = 3,267,468.09/1,987.32
6. Step 6: Final answer
   x = 1,644.16