Finding the Fourth Proportional to 2,985.85, 4,478.23 and 1,136.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.85 : 4,478.23 = 1,136.55 : x
2. Step 2: Convert to fraction form
   2,985.85/4,478.23 = 1,136.55/x
3. Step 3: Cross multiply
   2,985.85x = 4,478.23 × 1,136.55
4. Step 4: Simplify right side
   2,985.85x = 5,089,732.31
5. Step 5: Solve for x
   x = 5,089,732.31/2,985.85
6. Step 6: Final answer
   x = 1,704.62