Finding the Fourth Proportional to 2,056.84, 3,085.28 and 807.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.84 : 3,085.28 = 807.56 : x
2. Step 2: Convert to fraction form
   2,056.84/3,085.28 = 807.56/x
3. Step 3: Cross multiply
   2,056.84x = 3,085.28 × 807.56
4. Step 4: Simplify right side
   2,056.84x = 2,491,548.72
5. Step 5: Solve for x
   x = 2,491,548.72/2,056.84
6. Step 6: Final answer
   x = 1,211.35