Finding the Fourth Proportional to 2,985.15, 4,478.36 and 1,136.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.15 : 4,478.36 = 1,136.30 : x
2. Step 2: Convert to fraction form
   2,985.15/4,478.36 = 1,136.30/x
3. Step 3: Cross multiply
   2,985.15x = 4,478.36 × 1,136.30
4. Step 4: Simplify right side
   2,985.15x = 5,088,732.39
5. Step 5: Solve for x
   x = 5,088,732.39/2,985.15
6. Step 6: Final answer
   x = 1,704.68