Finding the Fourth Proportional to 1,835.20, 2,532.72 and 1,136.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,835.20 : 2,532.72 = 1,136.80 : x
2. Step 2: Convert to fraction form
   1,835.20/2,532.72 = 1,136.80/x
3. Step 3: Cross multiply
   1,835.20x = 2,532.72 × 1,136.80
4. Step 4: Simplify right side
   1,835.20x = 2,879,196.10
5. Step 5: Solve for x
   x = 2,879,196.10/1,835.20
6. Step 6: Final answer
   x = 1,568.87