Finding the Fourth Proportional to 1,802.21, 2,487.51 and 1,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.21 : 2,487.51 = 1,016.72 : x
2. Step 2: Convert to fraction form
   1,802.21/2,487.51 = 1,016.72/x
3. Step 3: Cross multiply
   1,802.21x = 2,487.51 × 1,016.72
4. Step 4: Simplify right side
   1,802.21x = 2,529,089.93
5. Step 5: Solve for x
   x = 2,529,089.93/1,802.21
6. Step 6: Final answer
   x = 1,403.32