Finding the Fourth Proportional to 1,636.83, 2,259.06 and 973.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.83 : 2,259.06 = 973.67 : x
2. Step 2: Convert to fraction form
   1,636.83/2,259.06 = 973.67/x
3. Step 3: Cross multiply
   1,636.83x = 2,259.06 × 973.67
4. Step 4: Simplify right side
   1,636.83x = 2,199,584.93
5. Step 5: Solve for x
   x = 2,199,584.93/1,636.83
6. Step 6: Final answer
   x = 1,343.81