Finding the Fourth Proportional to 3,153.03, 4,727.89 and 931.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,153.03 : 4,727.89 = 931.57 : x
2. Step 2: Convert to fraction form
   3,153.03/4,727.89 = 931.57/x
3. Step 3: Cross multiply
   3,153.03x = 4,727.89 × 931.57
4. Step 4: Simplify right side
   3,153.03x = 4,404,360.49
5. Step 5: Solve for x
   x = 4,404,360.49/3,153.03
6. Step 6: Final answer
   x = 1,396.87