Finding the Fourth Proportional to 2,370.42, 3,557.07 and 909.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,370.42 : 3,557.07 = 909.72 : x
2. Step 2: Convert to fraction form
   2,370.42/3,557.07 = 909.72/x
3. Step 3: Cross multiply
   2,370.42x = 3,557.07 × 909.72
4. Step 4: Simplify right side
   2,370.42x = 3,235,937.72
5. Step 5: Solve for x
   x = 3,235,937.72/2,370.42
6. Step 6: Final answer
   x = 1,365.13