Finding the Fourth Proportional to 2,093.31, 3,138.98 and 1,216.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.31 : 3,138.98 = 1,216.09 : x
2. Step 2: Convert to fraction form
   2,093.31/3,138.98 = 1,216.09/x
3. Step 3: Cross multiply
   2,093.31x = 3,138.98 × 1,216.09
4. Step 4: Simplify right side
   2,093.31x = 3,817,282.19
5. Step 5: Solve for x
   x = 3,817,282.19/2,093.31
6. Step 6: Final answer
   x = 1,823.56