Finding the Fourth Proportional to 2,505.55, 3,457.78 and 1,511.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.55 : 3,457.78 = 1,511.15 : x
2. Step 2: Convert to fraction form
   2,505.55/3,457.78 = 1,511.15/x
3. Step 3: Cross multiply
   2,505.55x = 3,457.78 × 1,511.15
4. Step 4: Simplify right side
   2,505.55x = 5,225,224.25
5. Step 5: Solve for x
   x = 5,225,224.25/2,505.55
6. Step 6: Final answer
   x = 2,085.46