Finding the Fourth Proportional to 1,985.98, 2,740.81 and 1,101.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.98 : 2,740.81 = 1,101.86 : x
2. Step 2: Convert to fraction form
   1,985.98/2,740.81 = 1,101.86/x
3. Step 3: Cross multiply
   1,985.98x = 2,740.81 × 1,101.86
4. Step 4: Simplify right side
   1,985.98x = 3,019,988.91
5. Step 5: Solve for x
   x = 3,019,988.91/1,985.98
6. Step 6: Final answer
   x = 1,520.65