Finding the Fourth Proportional to 1,181.78, 1,770.27 and 603.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.78 : 1,770.27 = 603.62 : x
2. Step 2: Convert to fraction form
   1,181.78/1,770.27 = 603.62/x
3. Step 3: Cross multiply
   1,181.78x = 1,770.27 × 603.62
4. Step 4: Simplify right side
   1,181.78x = 1,068,570.38
5. Step 5: Solve for x
   x = 1,068,570.38/1,181.78
6. Step 6: Final answer
   x = 904.20