Finding the Fourth Proportional to 3,678.34, 5,075.98 and 1,999.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.34 : 5,075.98 = 1,999.72 : x
2. Step 2: Convert to fraction form
   3,678.34/5,075.98 = 1,999.72/x
3. Step 3: Cross multiply
   3,678.34x = 5,075.98 × 1,999.72
4. Step 4: Simplify right side
   3,678.34x = 10,150,538.73
5. Step 5: Solve for x
   x = 10,150,538.73/3,678.34
6. Step 6: Final answer
   x = 2,759.54