Finding the Fourth Proportional to 3,374.89, 5,062.31 and 909.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,374.89 : 5,062.31 = 909.49 : x
2. Step 2: Convert to fraction form
   3,374.89/5,062.31 = 909.49/x
3. Step 3: Cross multiply
   3,374.89x = 5,062.31 × 909.49
4. Step 4: Simplify right side
   3,374.89x = 4,604,120.32
5. Step 5: Solve for x
   x = 4,604,120.32/3,374.89
6. Step 6: Final answer
   x = 1,364.23