Finding the Fourth Proportional to 1,917.05, 2,870.64 and 1,608.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.05 : 2,870.64 = 1,608.12 : x
2. Step 2: Convert to fraction form
   1,917.05/2,870.64 = 1,608.12/x
3. Step 3: Cross multiply
   1,917.05x = 2,870.64 × 1,608.12
4. Step 4: Simplify right side
   1,917.05x = 4,616,333.60
5. Step 5: Solve for x
   x = 4,616,333.60/1,917.05
6. Step 6: Final answer
   x = 2,408.05