Finding the Fourth Proportional to 2,656.29, 3,982.89 and 900.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.29 : 3,982.89 = 900.70 : x
2. Step 2: Convert to fraction form
   2,656.29/3,982.89 = 900.70/x
3. Step 3: Cross multiply
   2,656.29x = 3,982.89 × 900.70
4. Step 4: Simplify right side
   2,656.29x = 3,587,389.02
5. Step 5: Solve for x
   x = 3,587,389.02/2,656.29
6. Step 6: Final answer
   x = 1,350.53