Finding the Fourth Proportional to 1,404.14, 1,937.31 and 906.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.14 : 1,937.31 = 906.80 : x
2. Step 2: Convert to fraction form
   1,404.14/1,937.31 = 906.80/x
3. Step 3: Cross multiply
   1,404.14x = 1,937.31 × 906.80
4. Step 4: Simplify right side
   1,404.14x = 1,756,752.71
5. Step 5: Solve for x
   x = 1,756,752.71/1,404.14
6. Step 6: Final answer
   x = 1,251.12