Finding the Fourth Proportional to 1,406.52, 1,940.04 and 908.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.52 : 1,940.04 = 908.40 : x
2. Step 2: Convert to fraction form
   1,406.52/1,940.04 = 908.40/x
3. Step 3: Cross multiply
   1,406.52x = 1,940.04 × 908.40
4. Step 4: Simplify right side
   1,406.52x = 1,762,332.34
5. Step 5: Solve for x
   x = 1,762,332.34/1,406.52
6. Step 6: Final answer
   x = 1,252.97