Finding the Fourth Proportional to 2,031.07, 2,802.85 and 1,191.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.07 : 2,802.85 = 1,191.61 : x
2. Step 2: Convert to fraction form
   2,031.07/2,802.85 = 1,191.61/x
3. Step 3: Cross multiply
   2,031.07x = 2,802.85 × 1,191.61
4. Step 4: Simplify right side
   2,031.07x = 3,339,904.09
5. Step 5: Solve for x
   x = 3,339,904.09/2,031.07
6. Step 6: Final answer
   x = 1,644.41