Finding the Fourth Proportional to 1,406.16, 1,938.42 and 908.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.16 : 1,938.42 = 908.76 : x
2. Step 2: Convert to fraction form
   1,406.16/1,938.42 = 908.76/x
3. Step 3: Cross multiply
   1,406.16x = 1,938.42 × 908.76
4. Step 4: Simplify right side
   1,406.16x = 1,761,558.56
5. Step 5: Solve for x
   x = 1,761,558.56/1,406.16
6. Step 6: Final answer
   x = 1,252.74