Finding the Fourth Proportional to 2,178.48, 3,005.58 and 1,234.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.48 : 3,005.58 = 1,234.18 : x
2. Step 2: Convert to fraction form
   2,178.48/3,005.58 = 1,234.18/x
3. Step 3: Cross multiply
   2,178.48x = 3,005.58 × 1,234.18
4. Step 4: Simplify right side
   2,178.48x = 3,709,426.72
5. Step 5: Solve for x
   x = 3,709,426.72/2,178.48
6. Step 6: Final answer
   x = 1,702.76