Finding the Fourth Proportional to 2,128.82, 3,188.60 and 1,030.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.82 : 3,188.60 = 1,030.88 : x
2. Step 2: Convert to fraction form
   2,128.82/3,188.60 = 1,030.88/x
3. Step 3: Cross multiply
   2,128.82x = 3,188.60 × 1,030.88
4. Step 4: Simplify right side
   2,128.82x = 3,287,042.87
5. Step 5: Solve for x
   x = 3,287,042.87/2,128.82
6. Step 6: Final answer
   x = 1,544.07