Finding the Fourth Proportional to 2,471.42, 3,705.93 and 912.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,471.42 : 3,705.93 = 912.16 : x
2. Step 2: Convert to fraction form
   2,471.42/3,705.93 = 912.16/x
3. Step 3: Cross multiply
   2,471.42x = 3,705.93 × 912.16
4. Step 4: Simplify right side
   2,471.42x = 3,380,393.31
5. Step 5: Solve for x
   x = 3,380,393.31/2,471.42
6. Step 6: Final answer
   x = 1,367.79