Finding the Fourth Proportional to 1,091.50, 1,506.01 and 619.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.50 : 1,506.01 = 619.29 : x
2. Step 2: Convert to fraction form
   1,091.50/1,506.01 = 619.29/x
3. Step 3: Cross multiply
   1,091.50x = 1,506.01 × 619.29
4. Step 4: Simplify right side
   1,091.50x = 932,646.31
5. Step 5: Solve for x
   x = 932,646.31/1,091.50
6. Step 6: Final answer
   x = 854.47