Finding the Fourth Proportional to 3,396.42, 5,094.72 and 931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,396.42 : 5,094.72 = 931.50 : x
2. Step 2: Convert to fraction form
   3,396.42/5,094.72 = 931.50/x
3. Step 3: Cross multiply
   3,396.42x = 5,094.72 × 931.50
4. Step 4: Simplify right side
   3,396.42x = 4,745,731.68
5. Step 5: Solve for x
   x = 4,745,731.68/3,396.42
6. Step 6: Final answer
   x = 1,397.27