Finding the Fourth Proportional to 1,383.25, 1,908.90 and 762.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.25 : 1,908.90 = 762.25 : x
2. Step 2: Convert to fraction form
   1,383.25/1,908.90 = 762.25/x
3. Step 3: Cross multiply
   1,383.25x = 1,908.90 × 762.25
4. Step 4: Simplify right side
   1,383.25x = 1,455,059.03
5. Step 5: Solve for x
   x = 1,455,059.03/1,383.25
6. Step 6: Final answer
   x = 1,051.91