Finding the Fourth Proportional to 3,111.15, 4,667.42 and 1,136.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.15 : 4,667.42 = 1,136.78 : x
2. Step 2: Convert to fraction form
   3,111.15/4,667.42 = 1,136.78/x
3. Step 3: Cross multiply
   3,111.15x = 4,667.42 × 1,136.78
4. Step 4: Simplify right side
   3,111.15x = 5,305,803.53
5. Step 5: Solve for x
   x = 5,305,803.53/3,111.15
6. Step 6: Final answer
   x = 1,705.42