Finding the Fourth Proportional to 1,802.67, 2,701.72 and 878.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.67 : 2,701.72 = 878.51 : x
2. Step 2: Convert to fraction form
   1,802.67/2,701.72 = 878.51/x
3. Step 3: Cross multiply
   1,802.67x = 2,701.72 × 878.51
4. Step 4: Simplify right side
   1,802.67x = 2,373,495.89
5. Step 5: Solve for x
   x = 2,373,495.89/1,802.67
6. Step 6: Final answer
   x = 1,316.66