Finding the Fourth Proportional to 1,755.34, 2,631.69 and 830.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,755.34 : 2,631.69 = 830.38 : x
2. Step 2: Convert to fraction form
   1,755.34/2,631.69 = 830.38/x
3. Step 3: Cross multiply
   1,755.34x = 2,631.69 × 830.38
4. Step 4: Simplify right side
   1,755.34x = 2,185,302.74
5. Step 5: Solve for x
   x = 2,185,302.74/1,755.34
6. Step 6: Final answer
   x = 1,244.95