Finding the Fourth Proportional to 2,093.60, 3,141.82 and 1,120.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.60 : 3,141.82 = 1,120.40 : x
2. Step 2: Convert to fraction form
   2,093.60/3,141.82 = 1,120.40/x
3. Step 3: Cross multiply
   2,093.60x = 3,141.82 × 1,120.40
4. Step 4: Simplify right side
   2,093.60x = 3,520,095.13
5. Step 5: Solve for x
   x = 3,520,095.13/2,093.60
6. Step 6: Final answer
   x = 1,681.36