Finding the Fourth Proportional to 1,343.84, 1,854.54 and 819.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.84 : 1,854.54 = 819.59 : x
2. Step 2: Convert to fraction form
   1,343.84/1,854.54 = 819.59/x
3. Step 3: Cross multiply
   1,343.84x = 1,854.54 × 819.59
4. Step 4: Simplify right side
   1,343.84x = 1,519,953.17
5. Step 5: Solve for x
   x = 1,519,953.17/1,343.84
6. Step 6: Final answer
   x = 1,131.06