Finding the Fourth Proportional to 1,259.89, 1,890.88 and 529.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.89 : 1,890.88 = 529.97 : x
2. Step 2: Convert to fraction form
   1,259.89/1,890.88 = 529.97/x
3. Step 3: Cross multiply
   1,259.89x = 1,890.88 × 529.97
4. Step 4: Simplify right side
   1,259.89x = 1,002,098.89
5. Step 5: Solve for x
   x = 1,002,098.89/1,259.89
6. Step 6: Final answer
   x = 795.39