Finding the Fourth Proportional to 1,563.71, 2,158.34 and 973.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.71 : 2,158.34 = 973.89 : x
2. Step 2: Convert to fraction form
   1,563.71/2,158.34 = 973.89/x
3. Step 3: Cross multiply
   1,563.71x = 2,158.34 × 973.89
4. Step 4: Simplify right side
   1,563.71x = 2,101,980.87
5. Step 5: Solve for x
   x = 2,101,980.87/1,563.71
6. Step 6: Final answer
   x = 1,344.23