Finding the Fourth Proportional to 1,816.61, 2,507.04 and 1,019.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.61 : 2,507.04 = 1,019.99 : x
2. Step 2: Convert to fraction form
   1,816.61/2,507.04 = 1,019.99/x
3. Step 3: Cross multiply
   1,816.61x = 2,507.04 × 1,019.99
4. Step 4: Simplify right side
   1,816.61x = 2,557,162.00
5. Step 5: Solve for x
   x = 2,557,162.00/1,816.61
6. Step 6: Final answer
   x = 1,407.66