Finding the Fourth Proportional to 2,071.86, 3,100.50 and 1,581

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.86 : 3,100.50 = 1,581 : x
2. Step 2: Convert to fraction form
   2,071.86/3,100.50 = 1,581/x
3. Step 3: Cross multiply
   2,071.86x = 3,100.50 × 1,581
4. Step 4: Simplify right side
   2,071.86x = 4,901,890.50
5. Step 5: Solve for x
   x = 4,901,890.50/2,071.86
6. Step 6: Final answer
   x = 2,365.94