Finding the Fourth Proportional to 1,906.76, 2,630.55 and 1,160.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.76 : 2,630.55 = 1,160.12 : x
2. Step 2: Convert to fraction form
   1,906.76/2,630.55 = 1,160.12/x
3. Step 3: Cross multiply
   1,906.76x = 2,630.55 × 1,160.12
4. Step 4: Simplify right side
   1,906.76x = 3,051,734.71
5. Step 5: Solve for x
   x = 3,051,734.71/1,906.76
6. Step 6: Final answer
   x = 1,600.49