Finding the Fourth Proportional to 1,985.79, 2,740.41 and 1,101.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.79 : 2,740.41 = 1,101.69 : x
2. Step 2: Convert to fraction form
   1,985.79/2,740.41 = 1,101.69/x
3. Step 3: Cross multiply
   1,985.79x = 2,740.41 × 1,101.69
4. Step 4: Simplify right side
   1,985.79x = 3,019,082.29
5. Step 5: Solve for x
   x = 3,019,082.29/1,985.79
6. Step 6: Final answer
   x = 1,520.34