Finding the Fourth Proportional to 1,885.10, 2,603.93 and 1,571.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.10 : 2,603.93 = 1,571.39 : x
2. Step 2: Convert to fraction form
   1,885.10/2,603.93 = 1,571.39/x
3. Step 3: Cross multiply
   1,885.10x = 2,603.93 × 1,571.39
4. Step 4: Simplify right side
   1,885.10x = 4,091,768.69
5. Step 5: Solve for x
   x = 4,091,768.69/1,885.10
6. Step 6: Final answer
   x = 2,170.59