Finding the Fourth Proportional to 2,071.84, 3,107.81 and 773.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.84 : 3,107.81 = 773.05 : x
2. Step 2: Convert to fraction form
   2,071.84/3,107.81 = 773.05/x
3. Step 3: Cross multiply
   2,071.84x = 3,107.81 × 773.05
4. Step 4: Simplify right side
   2,071.84x = 2,402,492.52
5. Step 5: Solve for x
   x = 2,402,492.52/2,071.84
6. Step 6: Final answer
   x = 1,159.59