Finding the Fourth Proportional to 2,101.34, 3,151.10 and 1,061.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.34 : 3,151.10 = 1,061.30 : x
2. Step 2: Convert to fraction form
   2,101.34/3,151.10 = 1,061.30/x
3. Step 3: Cross multiply
   2,101.34x = 3,151.10 × 1,061.30
4. Step 4: Simplify right side
   2,101.34x = 3,344,272.96
5. Step 5: Solve for x
   x = 3,344,272.96/2,101.34
6. Step 6: Final answer
   x = 1,591.49