Finding the Fourth Proportional to 1,645.43, 2,271.48 and 973.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.43 : 2,271.48 = 973.35 : x
2. Step 2: Convert to fraction form
   1,645.43/2,271.48 = 973.35/x
3. Step 3: Cross multiply
   1,645.43x = 2,271.48 × 973.35
4. Step 4: Simplify right side
   1,645.43x = 2,210,928.83
5. Step 5: Solve for x
   x = 2,210,928.83/1,645.43
6. Step 6: Final answer
   x = 1,343.68