Finding the Fourth Proportional to 1,619.69, 2,430.75 and 1,151.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.69 : 2,430.75 = 1,151.10 : x
2. Step 2: Convert to fraction form
   1,619.69/2,430.75 = 1,151.10/x
3. Step 3: Cross multiply
   1,619.69x = 2,430.75 × 1,151.10
4. Step 4: Simplify right side
   1,619.69x = 2,798,043.28
5. Step 5: Solve for x
   x = 2,798,043.28/1,619.69
6. Step 6: Final answer
   x = 1,727.52