Finding the Fourth Proportional to 2,071.91, 3,109.25 and 901.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.91 : 3,109.25 = 901.56 : x
2. Step 2: Convert to fraction form
   2,071.91/3,109.25 = 901.56/x
3. Step 3: Cross multiply
   2,071.91x = 3,109.25 × 901.56
4. Step 4: Simplify right side
   2,071.91x = 2,803,189.34
5. Step 5: Solve for x
   x = 2,803,189.34/2,071.91
6. Step 6: Final answer
   x = 1,352.95