Finding the Fourth Proportional to 2,166.42, 3,248.72 and 933.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.42 : 3,248.72 = 933.18 : x
2. Step 2: Convert to fraction form
   2,166.42/3,248.72 = 933.18/x
3. Step 3: Cross multiply
   2,166.42x = 3,248.72 × 933.18
4. Step 4: Simplify right side
   2,166.42x = 3,031,640.53
5. Step 5: Solve for x
   x = 3,031,640.53/2,166.42
6. Step 6: Final answer
   x = 1,399.38