Finding the Fourth Proportional to 1,825.31, 2,736.21 and 670.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,825.31 : 2,736.21 = 670.79 : x
2. Step 2: Convert to fraction form
   1,825.31/2,736.21 = 670.79/x
3. Step 3: Cross multiply
   1,825.31x = 2,736.21 × 670.79
4. Step 4: Simplify right side
   1,825.31x = 1,835,422.31
5. Step 5: Solve for x
   x = 1,835,422.31/1,825.31
6. Step 6: Final answer
   x = 1,005.54