Finding the Fourth Proportional to 2,156.67, 3,235.29 and 1,061.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.67 : 3,235.29 = 1,061.07 : x
2. Step 2: Convert to fraction form
   2,156.67/3,235.29 = 1,061.07/x
3. Step 3: Cross multiply
   2,156.67x = 3,235.29 × 1,061.07
4. Step 4: Simplify right side
   2,156.67x = 3,432,869.16
5. Step 5: Solve for x
   x = 3,432,869.16/2,156.67
6. Step 6: Final answer
   x = 1,591.75