Finding the Fourth Proportional to 1,810.69, 2,500.20 and 1,455.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.69 : 2,500.20 = 1,455.47 : x
2. Step 2: Convert to fraction form
   1,810.69/2,500.20 = 1,455.47/x
3. Step 3: Cross multiply
   1,810.69x = 2,500.20 × 1,455.47
4. Step 4: Simplify right side
   1,810.69x = 3,638,975.48
5. Step 5: Solve for x
   x = 3,638,975.48/1,810.69
6. Step 6: Final answer
   x = 2,009.72