Finding the Fourth Proportional to 3,340.76, 5,009.45 and 1,118.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,340.76 : 5,009.45 = 1,118.82 : x
2. Step 2: Convert to fraction form
   3,340.76/5,009.45 = 1,118.82/x
3. Step 3: Cross multiply
   3,340.76x = 5,009.45 × 1,118.82
4. Step 4: Simplify right side
   3,340.76x = 5,604,667.25
5. Step 5: Solve for x
   x = 5,604,667.25/3,340.76
6. Step 6: Final answer
   x = 1,677.66