Finding the Fourth Proportional to 1,914.89, 2,640.51 and 1,251.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.89 : 2,640.51 = 1,251.50 : x
2. Step 2: Convert to fraction form
   1,914.89/2,640.51 = 1,251.50/x
3. Step 3: Cross multiply
   1,914.89x = 2,640.51 × 1,251.50
4. Step 4: Simplify right side
   1,914.89x = 3,304,585.06
5. Step 5: Solve for x
   x = 3,304,585.06/1,914.89
6. Step 6: Final answer
   x = 1,725.74