Finding the Fourth Proportional to 2,099.81, 3,146.64 and 1,173.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.81 : 3,146.64 = 1,173.98 : x
2. Step 2: Convert to fraction form
   2,099.81/3,146.64 = 1,173.98/x
3. Step 3: Cross multiply
   2,099.81x = 3,146.64 × 1,173.98
4. Step 4: Simplify right side
   2,099.81x = 3,694,092.43
5. Step 5: Solve for x
   x = 3,694,092.43/2,099.81
6. Step 6: Final answer
   x = 1,759.25