Finding the Fourth Proportional to 2,095.38, 2,891.60 and 1,138.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.38 : 2,891.60 = 1,138.31 : x
2. Step 2: Convert to fraction form
   2,095.38/2,891.60 = 1,138.31/x
3. Step 3: Cross multiply
   2,095.38x = 2,891.60 × 1,138.31
4. Step 4: Simplify right side
   2,095.38x = 3,291,538.56
5. Step 5: Solve for x
   x = 3,291,538.56/2,095.38
6. Step 6: Final answer
   x = 1,570.86