Finding the Fourth Proportional to 1,018.98, 1,529.01 and 580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.98 : 1,529.01 = 580.50 : x
2. Step 2: Convert to fraction form
   1,018.98/1,529.01 = 580.50/x
3. Step 3: Cross multiply
   1,018.98x = 1,529.01 × 580.50
4. Step 4: Simplify right side
   1,018.98x = 887,590.31
5. Step 5: Solve for x
   x = 887,590.31/1,018.98
6. Step 6: Final answer
   x = 871.06