Finding the Fourth Proportional to 1,802.58, 2,487.60 and 1,016.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.58 : 2,487.60 = 1,016.65 : x
2. Step 2: Convert to fraction form
   1,802.58/2,487.60 = 1,016.65/x
3. Step 3: Cross multiply
   1,802.58x = 2,487.60 × 1,016.65
4. Step 4: Simplify right side
   1,802.58x = 2,529,001.02
5. Step 5: Solve for x
   x = 2,529,001.02/1,802.58
6. Step 6: Final answer
   x = 1,402.99