Finding the Fourth Proportional to 1,587.54, 2,379.15 and 1,009.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.54 : 2,379.15 = 1,009.38 : x
2. Step 2: Convert to fraction form
   1,587.54/2,379.15 = 1,009.38/x
3. Step 3: Cross multiply
   1,587.54x = 2,379.15 × 1,009.38
4. Step 4: Simplify right side
   1,587.54x = 2,401,466.43
5. Step 5: Solve for x
   x = 2,401,466.43/1,587.54
6. Step 6: Final answer
   x = 1,512.70