Finding the Fourth Proportional to 1,881.72, 2,814.36 and 1,099.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,881.72 : 2,814.36 = 1,099.86 : x
2. Step 2: Convert to fraction form
   1,881.72/2,814.36 = 1,099.86/x
3. Step 3: Cross multiply
   1,881.72x = 2,814.36 × 1,099.86
4. Step 4: Simplify right side
   1,881.72x = 3,095,401.99
5. Step 5: Solve for x
   x = 3,095,401.99/1,881.72
6. Step 6: Final answer
   x = 1,644.99