Finding the Fourth Proportional to 2,128.50, 3,190.47 and 1,030.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.50 : 3,190.47 = 1,030.44 : x
2. Step 2: Convert to fraction form
   2,128.50/3,190.47 = 1,030.44/x
3. Step 3: Cross multiply
   2,128.50x = 3,190.47 × 1,030.44
4. Step 4: Simplify right side
   2,128.50x = 3,287,596.01
5. Step 5: Solve for x
   x = 3,287,596.01/2,128.50
6. Step 6: Final answer
   x = 1,544.56