Finding the Fourth Proportional to 1,491.98, 2,238.66 and 670.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.98 : 2,238.66 = 670.48 : x
2. Step 2: Convert to fraction form
   1,491.98/2,238.66 = 670.48/x
3. Step 3: Cross multiply
   1,491.98x = 2,238.66 × 670.48
4. Step 4: Simplify right side
   1,491.98x = 1,500,976.76
5. Step 5: Solve for x
   x = 1,500,976.76/1,491.98
6. Step 6: Final answer
   x = 1,006.03