Finding the Fourth Proportional to 1,607.27, 2,408.57 and 784.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.27 : 2,408.57 = 784.61 : x
2. Step 2: Convert to fraction form
   1,607.27/2,408.57 = 784.61/x
3. Step 3: Cross multiply
   1,607.27x = 2,408.57 × 784.61
4. Step 4: Simplify right side
   1,607.27x = 1,889,796.09
5. Step 5: Solve for x
   x = 1,889,796.09/1,607.27
6. Step 6: Final answer
   x = 1,175.78