Finding the Fourth Proportional to 3,666.32, 5,059.52 and 1,987.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.32 : 5,059.52 = 1,987.72 : x
2. Step 2: Convert to fraction form
   3,666.32/5,059.52 = 1,987.72/x
3. Step 3: Cross multiply
   3,666.32x = 5,059.52 × 1,987.72
4. Step 4: Simplify right side
   3,666.32x = 10,056,905.14
5. Step 5: Solve for x
   x = 10,056,905.14/3,666.32
6. Step 6: Final answer
   x = 2,743.05