Finding the Fourth Proportional to 1,987.04, 2,742.16 and 1,102.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.04 : 2,742.16 = 1,102.82 : x
2. Step 2: Convert to fraction form
   1,987.04/2,742.16 = 1,102.82/x
3. Step 3: Cross multiply
   1,987.04x = 2,742.16 × 1,102.82
4. Step 4: Simplify right side
   1,987.04x = 3,024,108.89
5. Step 5: Solve for x
   x = 3,024,108.89/1,987.04
6. Step 6: Final answer
   x = 1,521.92