Finding the Fourth Proportional to 2,321.70, 3,477.15 and 1,587.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.70 : 3,477.15 = 1,587.30 : x
2. Step 2: Convert to fraction form
   2,321.70/3,477.15 = 1,587.30/x
3. Step 3: Cross multiply
   2,321.70x = 3,477.15 × 1,587.30
4. Step 4: Simplify right side
   2,321.70x = 5,519,280.20
5. Step 5: Solve for x
   x = 5,519,280.20/2,321.70
6. Step 6: Final answer
   x = 2,377.26