Finding the Fourth Proportional to 2,178.09, 3,005.53 and 1,233.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.09 : 3,005.53 = 1,233.74 : x
2. Step 2: Convert to fraction form
   2,178.09/3,005.53 = 1,233.74/x
3. Step 3: Cross multiply
   2,178.09x = 3,005.53 × 1,233.74
4. Step 4: Simplify right side
   2,178.09x = 3,708,047.01
5. Step 5: Solve for x
   x = 3,708,047.01/2,178.09
6. Step 6: Final answer
   x = 1,702.43