Finding the Fourth Proportional to 2,031, 2,802.78 and 1,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031 : 2,802.78 = 1,099.50 : x
2. Step 2: Convert to fraction form
   2,031/2,802.78 = 1,099.50/x
3. Step 3: Cross multiply
   2,031x = 2,802.78 × 1,099.50
4. Step 4: Simplify right side
   2,031x = 3,081,656.61
5. Step 5: Solve for x
   x = 3,081,656.61/2,031
6. Step 6: Final answer
   x = 1,517.31