Finding the Fourth Proportional to 2,128.65, 3,188.33 and 1,510.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.65 : 3,188.33 = 1,510.47 : x
2. Step 2: Convert to fraction form
   2,128.65/3,188.33 = 1,510.47/x
3. Step 3: Cross multiply
   2,128.65x = 3,188.33 × 1,510.47
4. Step 4: Simplify right side
   2,128.65x = 4,815,869.26
5. Step 5: Solve for x
   x = 4,815,869.26/2,128.65
6. Step 6: Final answer
   x = 2,262.41