Finding the Fourth Proportional to 2,123.76, 3,185.46 and 1,434.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.76 : 3,185.46 = 1,434.85 : x
2. Step 2: Convert to fraction form
   2,123.76/3,185.46 = 1,434.85/x
3. Step 3: Cross multiply
   2,123.76x = 3,185.46 × 1,434.85
4. Step 4: Simplify right side
   2,123.76x = 4,570,657.28
5. Step 5: Solve for x
   x = 4,570,657.28/2,123.76
6. Step 6: Final answer
   x = 2,152.15