Finding the Fourth Proportional to 1,916.39, 2,878.23 and 1,191.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.39 : 2,878.23 = 1,191.03 : x
2. Step 2: Convert to fraction form
   1,916.39/2,878.23 = 1,191.03/x
3. Step 3: Cross multiply
   1,916.39x = 2,878.23 × 1,191.03
4. Step 4: Simplify right side
   1,916.39x = 3,428,052.32
5. Step 5: Solve for x
   x = 3,428,052.32/1,916.39
6. Step 6: Final answer
   x = 1,788.81