Finding the Fourth Proportional to 1,642.98, 2,463.54 and 667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.98 : 2,463.54 = 667.94 : x
2. Step 2: Convert to fraction form
   1,642.98/2,463.54 = 667.94/x
3. Step 3: Cross multiply
   1,642.98x = 2,463.54 × 667.94
4. Step 4: Simplify right side
   1,642.98x = 1,645,484.59
5. Step 5: Solve for x
   x = 1,645,484.59/1,642.98
6. Step 6: Final answer
   x = 1,001.52