Finding the Fourth Proportional to 2,145.61, 3,216.02 and 973.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.61 : 3,216.02 = 973.86 : x
2. Step 2: Convert to fraction form
   2,145.61/3,216.02 = 973.86/x
3. Step 3: Cross multiply
   2,145.61x = 3,216.02 × 973.86
4. Step 4: Simplify right side
   2,145.61x = 3,131,937.16
5. Step 5: Solve for x
   x = 3,131,937.16/2,145.61
6. Step 6: Final answer
   x = 1,459.70