Finding the Fourth Proportional to 1,364.72, 2,045.61 and 670.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.72 : 2,045.61 = 670.58 : x
2. Step 2: Convert to fraction form
   1,364.72/2,045.61 = 670.58/x
3. Step 3: Cross multiply
   1,364.72x = 2,045.61 × 670.58
4. Step 4: Simplify right side
   1,364.72x = 1,371,745.15
5. Step 5: Solve for x
   x = 1,371,745.15/1,364.72
6. Step 6: Final answer
   x = 1,005.15