Finding the Fourth Proportional to 2,071.35, 3,101.73 and 1,145.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.35 : 3,101.73 = 1,145.89 : x
2. Step 2: Convert to fraction form
   2,071.35/3,101.73 = 1,145.89/x
3. Step 3: Cross multiply
   2,071.35x = 3,101.73 × 1,145.89
4. Step 4: Simplify right side
   2,071.35x = 3,554,241.39
5. Step 5: Solve for x
   x = 3,554,241.39/2,071.35
6. Step 6: Final answer
   x = 1,715.91