Finding the Fourth Proportional to 2,656.52, 3,984.64 and 900.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.52 : 3,984.64 = 900.84 : x
2. Step 2: Convert to fraction form
   2,656.52/3,984.64 = 900.84/x
3. Step 3: Cross multiply
   2,656.52x = 3,984.64 × 900.84
4. Step 4: Simplify right side
   2,656.52x = 3,589,523.10
5. Step 5: Solve for x
   x = 3,589,523.10/2,656.52
6. Step 6: Final answer
   x = 1,351.21