Finding the Fourth Proportional to 1,906.72, 2,630.55 and 1,160.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.72 : 2,630.55 = 1,160.17 : x
2. Step 2: Convert to fraction form
   1,906.72/2,630.55 = 1,160.17/x
3. Step 3: Cross multiply
   1,906.72x = 2,630.55 × 1,160.17
4. Step 4: Simplify right side
   1,906.72x = 3,051,885.19
5. Step 5: Solve for x
   x = 3,051,885.19/1,906.72
6. Step 6: Final answer
   x = 1,600.59