Finding the Fourth Proportional to 1,973.31, 2,720.61 and 1,617.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.31 : 2,720.61 = 1,617.93 : x
2. Step 2: Convert to fraction form
   1,973.31/2,720.61 = 1,617.93/x
3. Step 3: Cross multiply
   1,973.31x = 2,720.61 × 1,617.93
4. Step 4: Simplify right side
   1,973.31x = 4,401,756.54
5. Step 5: Solve for x
   x = 4,401,756.54/1,973.31
6. Step 6: Final answer
   x = 2,230.65