Finding the Fourth Proportional to 1,563.69, 2,158.32 and 973.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.69 : 2,158.32 = 973.88 : x
2. Step 2: Convert to fraction form
   1,563.69/2,158.32 = 973.88/x
3. Step 3: Cross multiply
   1,563.69x = 2,158.32 × 973.88
4. Step 4: Simplify right side
   1,563.69x = 2,101,933.89
5. Step 5: Solve for x
   x = 2,101,933.89/1,563.69
6. Step 6: Final answer
   x = 1,344.21