Finding the Fourth Proportional to 1,177.42, 1,624.89 and 805.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177.42 : 1,624.89 = 805.18 : x
2. Step 2: Convert to fraction form
   1,177.42/1,624.89 = 805.18/x
3. Step 3: Cross multiply
   1,177.42x = 1,624.89 × 805.18
4. Step 4: Simplify right side
   1,177.42x = 1,308,328.93
5. Step 5: Solve for x
   x = 1,308,328.93/1,177.42
6. Step 6: Final answer
   x = 1,111.18