Finding the Fourth Proportional to 1,679.33, 2,317.23 and 933.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.33 : 2,317.23 = 933.30 : x
2. Step 2: Convert to fraction form
   1,679.33/2,317.23 = 933.30/x
3. Step 3: Cross multiply
   1,679.33x = 2,317.23 × 933.30
4. Step 4: Simplify right side
   1,679.33x = 2,162,670.76
5. Step 5: Solve for x
   x = 2,162,670.76/1,679.33
6. Step 6: Final answer
   x = 1,287.82