Finding the Fourth Proportional to 1,019.18, 1,403.40 and 841.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.18 : 1,403.40 = 841.48 : x
2. Step 2: Convert to fraction form
   1,019.18/1,403.40 = 841.48/x
3. Step 3: Cross multiply
   1,019.18x = 1,403.40 × 841.48
4. Step 4: Simplify right side
   1,019.18x = 1,180,933.03
5. Step 5: Solve for x
   x = 1,180,933.03/1,019.18
6. Step 6: Final answer
   x = 1,158.71