Finding the Fourth Proportional to 1,758.72, 2,643 and 1,214.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.72 : 2,643 = 1,214.40 : x
2. Step 2: Convert to fraction form
   1,758.72/2,643 = 1,214.40/x
3. Step 3: Cross multiply
   1,758.72x = 2,643 × 1,214.40
4. Step 4: Simplify right side
   1,758.72x = 3,209,659.20
5. Step 5: Solve for x
   x = 3,209,659.20/1,758.72
6. Step 6: Final answer
   x = 1,825.00