Finding the Fourth Proportional to 2,100.32, 3,147.74 and 866.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.32 : 3,147.74 = 866.48 : x
2. Step 2: Convert to fraction form
   2,100.32/3,147.74 = 866.48/x
3. Step 3: Cross multiply
   2,100.32x = 3,147.74 × 866.48
4. Step 4: Simplify right side
   2,100.32x = 2,727,453.76
5. Step 5: Solve for x
   x = 2,727,453.76/2,100.32
6. Step 6: Final answer
   x = 1,298.59