Finding the Fourth Proportional to 1,665.52, 2,308.14 and 1,642.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.52 : 2,308.14 = 1,642.03 : x
2. Step 2: Convert to fraction form
   1,665.52/2,308.14 = 1,642.03/x
3. Step 3: Cross multiply
   1,665.52x = 2,308.14 × 1,642.03
4. Step 4: Simplify right side
   1,665.52x = 3,790,038.01
5. Step 5: Solve for x
   x = 3,790,038.01/1,665.52
6. Step 6: Final answer
   x = 2,275.59