Finding the Fourth Proportional to 2,073.53, 3,109.38 and 667.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.53 : 3,109.38 = 667.61 : x
2. Step 2: Convert to fraction form
   2,073.53/3,109.38 = 667.61/x
3. Step 3: Cross multiply
   2,073.53x = 3,109.38 × 667.61
4. Step 4: Simplify right side
   2,073.53x = 2,075,837.63
5. Step 5: Solve for x
   x = 2,075,837.63/2,073.53
6. Step 6: Final answer
   x = 1,001.12