Finding the Fourth Proportional to 2,235.59, 3,354.52 and 920.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.59 : 3,354.52 = 920.35 : x
2. Step 2: Convert to fraction form
   2,235.59/3,354.52 = 920.35/x
3. Step 3: Cross multiply
   2,235.59x = 3,354.52 × 920.35
4. Step 4: Simplify right side
   2,235.59x = 3,087,327.88
5. Step 5: Solve for x
   x = 3,087,327.88/2,235.59
6. Step 6: Final answer
   x = 1,380.99