Finding the Fourth Proportional to 3,434.86, 5,148.78 and 1,587.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,434.86 : 5,148.78 = 1,587.34 : x
2. Step 2: Convert to fraction form
   3,434.86/5,148.78 = 1,587.34/x
3. Step 3: Cross multiply
   3,434.86x = 5,148.78 × 1,587.34
4. Step 4: Simplify right side
   3,434.86x = 8,172,864.45
5. Step 5: Solve for x
   x = 8,172,864.45/3,434.86
6. Step 6: Final answer
   x = 2,379.39