Finding the Fourth Proportional to 1,885.42, 2,603.12 and 1,178.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.42 : 2,603.12 = 1,178.34 : x
2. Step 2: Convert to fraction form
   1,885.42/2,603.12 = 1,178.34/x
3. Step 3: Cross multiply
   1,885.42x = 2,603.12 × 1,178.34
4. Step 4: Simplify right side
   1,885.42x = 3,067,360.42
5. Step 5: Solve for x
   x = 3,067,360.42/1,885.42
6. Step 6: Final answer
   x = 1,626.88