Finding the Fourth Proportional to 4,921.01, 7,379.72 and 1,800.09

Step by Step Solution

1. Step 1: Write the proportion equation
   4,921.01 : 7,379.72 = 1,800.09 : x
2. Step 2: Convert to fraction form
   4,921.01/7,379.72 = 1,800.09/x
3. Step 3: Cross multiply
   4,921.01x = 7,379.72 × 1,800.09
4. Step 4: Simplify right side
   4,921.01x = 13,284,160.17
5. Step 5: Solve for x
   x = 13,284,160.17/4,921.01
6. Step 6: Final answer
   x = 2,699.48