Finding the Fourth Proportional to 1,663.81, 2,495.59 and 1,202.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.81 : 2,495.59 = 1,202.42 : x
2. Step 2: Convert to fraction form
   1,663.81/2,495.59 = 1,202.42/x
3. Step 3: Cross multiply
   1,663.81x = 2,495.59 × 1,202.42
4. Step 4: Simplify right side
   1,663.81x = 3,000,747.33
5. Step 5: Solve for x
   x = 3,000,747.33/1,663.81
6. Step 6: Final answer
   x = 1,803.54