Finding the Fourth Proportional to 1,578.82, 2,368.71 and 654.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.82 : 2,368.71 = 654.81 : x
2. Step 2: Convert to fraction form
   1,578.82/2,368.71 = 654.81/x
3. Step 3: Cross multiply
   1,578.82x = 2,368.71 × 654.81
4. Step 4: Simplify right side
   1,578.82x = 1,551,043.15
5. Step 5: Solve for x
   x = 1,551,043.15/1,578.82
6. Step 6: Final answer
   x = 982.41