Finding the Fourth Proportional to 1,091.33, 1,505.97 and 619.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.33 : 1,505.97 = 619.25 : x
2. Step 2: Convert to fraction form
   1,091.33/1,505.97 = 619.25/x
3. Step 3: Cross multiply
   1,091.33x = 1,505.97 × 619.25
4. Step 4: Simplify right side
   1,091.33x = 932,564.39
5. Step 5: Solve for x
   x = 932,564.39/1,091.33
6. Step 6: Final answer
   x = 854.52