Finding the Fourth Proportional to 1,489.69, 2,054.15 and 929.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.69 : 2,054.15 = 929.96 : x
2. Step 2: Convert to fraction form
   1,489.69/2,054.15 = 929.96/x
3. Step 3: Cross multiply
   1,489.69x = 2,054.15 × 929.96
4. Step 4: Simplify right side
   1,489.69x = 1,910,274.52
5. Step 5: Solve for x
   x = 1,910,274.52/1,489.69
6. Step 6: Final answer
   x = 1,282.33