Finding the Fourth Proportional to 3,374.90, 5,061.71 and 909.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,374.90 : 5,061.71 = 909.10 : x
2. Step 2: Convert to fraction form
   3,374.90/5,061.71 = 909.10/x
3. Step 3: Cross multiply
   3,374.90x = 5,061.71 × 909.10
4. Step 4: Simplify right side
   3,374.90x = 4,601,600.56
5. Step 5: Solve for x
   x = 4,601,600.56/3,374.90
6. Step 6: Final answer
   x = 1,363.48