Finding the Fourth Proportional to 2,662.63, 3,994.01 and 931.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.63 : 3,994.01 = 931.25 : x
2. Step 2: Convert to fraction form
   2,662.63/3,994.01 = 931.25/x
3. Step 3: Cross multiply
   2,662.63x = 3,994.01 × 931.25
4. Step 4: Simplify right side
   2,662.63x = 3,719,421.81
5. Step 5: Solve for x
   x = 3,719,421.81/2,662.63
6. Step 6: Final answer
   x = 1,396.90