Finding the Fourth Proportional to 2,131.84, 3,203.76 and 1,106.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.84 : 3,203.76 = 1,106.56 : x
2. Step 2: Convert to fraction form
   2,131.84/3,203.76 = 1,106.56/x
3. Step 3: Cross multiply
   2,131.84x = 3,203.76 × 1,106.56
4. Step 4: Simplify right side
   2,131.84x = 3,545,152.67
5. Step 5: Solve for x
   x = 3,545,152.67/2,131.84
6. Step 6: Final answer
   x = 1,662.95