Finding the Fourth Proportional to 2,622.22, 3,931.96 and 977.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.22 : 3,931.96 = 977.42 : x
2. Step 2: Convert to fraction form
   2,622.22/3,931.96 = 977.42/x
3. Step 3: Cross multiply
   2,622.22x = 3,931.96 × 977.42
4. Step 4: Simplify right side
   2,622.22x = 3,843,176.34
5. Step 5: Solve for x
   x = 3,843,176.34/2,622.22
6. Step 6: Final answer
   x = 1,465.62