Finding the Fourth Proportional to 1,402.54, 1,936.80 and 906.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.54 : 1,936.80 = 906.04 : x
2. Step 2: Convert to fraction form
   1,402.54/1,936.80 = 906.04/x
3. Step 3: Cross multiply
   1,402.54x = 1,936.80 × 906.04
4. Step 4: Simplify right side
   1,402.54x = 1,754,818.27
5. Step 5: Solve for x
   x = 1,754,818.27/1,402.54
6. Step 6: Final answer
   x = 1,251.17