Finding the Fourth Proportional to 1,906.57, 2,631.59 and 1,120.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.57 : 2,631.59 = 1,120.87 : x
2. Step 2: Convert to fraction form
   1,906.57/2,631.59 = 1,120.87/x
3. Step 3: Cross multiply
   1,906.57x = 2,631.59 × 1,120.87
4. Step 4: Simplify right side
   1,906.57x = 2,949,670.28
5. Step 5: Solve for x
   x = 2,949,670.28/1,906.57
6. Step 6: Final answer
   x = 1,547.11