Finding the Fourth Proportional to 3,390.83, 5,086.50 and 925.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390.83 : 5,086.50 = 925.73 : x
2. Step 2: Convert to fraction form
   3,390.83/5,086.50 = 925.73/x
3. Step 3: Cross multiply
   3,390.83x = 5,086.50 × 925.73
4. Step 4: Simplify right side
   3,390.83x = 4,708,715.82
5. Step 5: Solve for x
   x = 4,708,715.82/3,390.83
6. Step 6: Final answer
   x = 1,388.66