Finding the Fourth Proportional to 3,677.72, 5,075.28 and 1,999.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.72 : 5,075.28 = 1,999.10 : x
2. Step 2: Convert to fraction form
   3,677.72/5,075.28 = 1,999.10/x
3. Step 3: Cross multiply
   3,677.72x = 5,075.28 × 1,999.10
4. Step 4: Simplify right side
   3,677.72x = 10,145,992.25
5. Step 5: Solve for x
   x = 10,145,992.25/3,677.72
6. Step 6: Final answer
   x = 2,758.77