Finding the Fourth Proportional to 1,731.33, 2,596.59 and 853.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.33 : 2,596.59 = 853.43 : x
2. Step 2: Convert to fraction form
   1,731.33/2,596.59 = 853.43/x
3. Step 3: Cross multiply
   1,731.33x = 2,596.59 × 853.43
4. Step 4: Simplify right side
   1,731.33x = 2,215,994.82
5. Step 5: Solve for x
   x = 2,215,994.82/1,731.33
6. Step 6: Final answer
   x = 1,279.94