Finding the Fourth Proportional to 2,005.07, 3,002.20 and 1,310.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.07 : 3,002.20 = 1,310.01 : x
2. Step 2: Convert to fraction form
   2,005.07/3,002.20 = 1,310.01/x
3. Step 3: Cross multiply
   2,005.07x = 3,002.20 × 1,310.01
4. Step 4: Simplify right side
   2,005.07x = 3,932,897.49
5. Step 5: Solve for x
   x = 3,932,897.49/2,005.07
6. Step 6: Final answer
   x = 1,961.48