Finding the Fourth Proportional to 1,091.32, 1,506.01 and 619.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.32 : 1,506.01 = 619.31 : x
2. Step 2: Convert to fraction form
   1,091.32/1,506.01 = 619.31/x
3. Step 3: Cross multiply
   1,091.32x = 1,506.01 × 619.31
4. Step 4: Simplify right side
   1,091.32x = 932,687.05
5. Step 5: Solve for x
   x = 932,687.05/1,091.32
6. Step 6: Final answer
   x = 854.64