Finding the Fourth Proportional to 1,589.40, 2,379.78 and 1,010.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,589.40 : 2,379.78 = 1,010.52 : x
2. Step 2: Convert to fraction form
   1,589.40/2,379.78 = 1,010.52/x
3. Step 3: Cross multiply
   1,589.40x = 2,379.78 × 1,010.52
4. Step 4: Simplify right side
   1,589.40x = 2,404,815.29
5. Step 5: Solve for x
   x = 2,404,815.29/1,589.40
6. Step 6: Final answer
   x = 1,513.03