Finding the Fourth Proportional to 2,643.34, 3,962.58 and 910.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.34 : 3,962.58 = 910.75 : x
2. Step 2: Convert to fraction form
   2,643.34/3,962.58 = 910.75/x
3. Step 3: Cross multiply
   2,643.34x = 3,962.58 × 910.75
4. Step 4: Simplify right side
   2,643.34x = 3,608,919.74
5. Step 5: Solve for x
   x = 3,608,919.74/2,643.34
6. Step 6: Final answer
   x = 1,365.29