Finding the Fourth Proportional to 2,064.15, 3,092.31 and 1,138.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.15 : 3,092.31 = 1,138.32 : x
2. Step 2: Convert to fraction form
   2,064.15/3,092.31 = 1,138.32/x
3. Step 3: Cross multiply
   2,064.15x = 3,092.31 × 1,138.32
4. Step 4: Simplify right side
   2,064.15x = 3,520,038.32
5. Step 5: Solve for x
   x = 3,520,038.32/2,064.15
6. Step 6: Final answer
   x = 1,705.32