Finding the Fourth Proportional to 1,017.54, 1,404.56 and 619.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.54 : 1,404.56 = 619.22 : x
2. Step 2: Convert to fraction form
   1,017.54/1,404.56 = 619.22/x
3. Step 3: Cross multiply
   1,017.54x = 1,404.56 × 619.22
4. Step 4: Simplify right side
   1,017.54x = 869,731.64
5. Step 5: Solve for x
   x = 869,731.64/1,017.54
6. Step 6: Final answer
   x = 854.74