Finding the Fourth Proportional to 1,802.34, 2,704.59 and 648.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.34 : 2,704.59 = 648.18 : x
2. Step 2: Convert to fraction form
   1,802.34/2,704.59 = 648.18/x
3. Step 3: Cross multiply
   1,802.34x = 2,704.59 × 648.18
4. Step 4: Simplify right side
   1,802.34x = 1,753,061.15
5. Step 5: Solve for x
   x = 1,753,061.15/1,802.34
6. Step 6: Final answer
   x = 972.66