Finding the Fourth Proportional to 2,095.30, 3,138.34 and 1,398.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.30 : 3,138.34 = 1,398.71 : x
2. Step 2: Convert to fraction form
   2,095.30/3,138.34 = 1,398.71/x
3. Step 3: Cross multiply
   2,095.30x = 3,138.34 × 1,398.71
4. Step 4: Simplify right side
   2,095.30x = 4,389,612.93
5. Step 5: Solve for x
   x = 4,389,612.93/2,095.30
6. Step 6: Final answer
   x = 2,094.98