Finding the Fourth Proportional to 1,987.50, 2,742.82 and 1,359.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.50 : 2,742.82 = 1,359.35 : x
2. Step 2: Convert to fraction form
   1,987.50/2,742.82 = 1,359.35/x
3. Step 3: Cross multiply
   1,987.50x = 2,742.82 × 1,359.35
4. Step 4: Simplify right side
   1,987.50x = 3,728,445.54
5. Step 5: Solve for x
   x = 3,728,445.54/1,987.50
6. Step 6: Final answer
   x = 1,875.94