Finding the Fourth Proportional to 1,181.62, 1,623.79 and 1,127.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.62 : 1,623.79 = 1,127.42 : x
2. Step 2: Convert to fraction form
   1,181.62/1,623.79 = 1,127.42/x
3. Step 3: Cross multiply
   1,181.62x = 1,623.79 × 1,127.42
4. Step 4: Simplify right side
   1,181.62x = 1,830,693.32
5. Step 5: Solve for x
   x = 1,830,693.32/1,181.62
6. Step 6: Final answer
   x = 1,549.31