Finding the Fourth Proportional to 1,906.30, 2,630.54 and 1,066.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.30 : 2,630.54 = 1,066.87 : x
2. Step 2: Convert to fraction form
   1,906.30/2,630.54 = 1,066.87/x
3. Step 3: Cross multiply
   1,906.30x = 2,630.54 × 1,066.87
4. Step 4: Simplify right side
   1,906.30x = 2,806,450.17
5. Step 5: Solve for x
   x = 2,806,450.17/1,906.30
6. Step 6: Final answer
   x = 1,472.20