Finding the Fourth Proportional to 1,619.42, 2,426.63 and 785.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.42 : 2,426.63 = 785.52 : x
2. Step 2: Convert to fraction form
   1,619.42/2,426.63 = 785.52/x
3. Step 3: Cross multiply
   1,619.42x = 2,426.63 × 785.52
4. Step 4: Simplify right side
   1,619.42x = 1,906,162.47
5. Step 5: Solve for x
   x = 1,906,162.47/1,619.42
6. Step 6: Final answer
   x = 1,177.07