Finding the Fourth Proportional to 2,101.48, 3,152.70 and 1,061.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.48 : 3,152.70 = 1,061.09 : x
2. Step 2: Convert to fraction form
   2,101.48/3,152.70 = 1,061.09/x
3. Step 3: Cross multiply
   2,101.48x = 3,152.70 × 1,061.09
4. Step 4: Simplify right side
   2,101.48x = 3,345,298.44
5. Step 5: Solve for x
   x = 3,345,298.44/2,101.48
6. Step 6: Final answer
   x = 1,591.88