Finding the Fourth Proportional to 2,045.20, 3,084.04 and 1,818.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.20 : 3,084.04 = 1,818.40 : x
2. Step 2: Convert to fraction form
   2,045.20/3,084.04 = 1,818.40/x
3. Step 3: Cross multiply
   2,045.20x = 3,084.04 × 1,818.40
4. Step 4: Simplify right side
   2,045.20x = 5,608,018.34
5. Step 5: Solve for x
   x = 5,608,018.34/2,045.20
6. Step 6: Final answer
   x = 2,742.04