Finding the Fourth Proportional to 1,061.22, 1,590.11 and 649.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.22 : 1,590.11 = 649.50 : x
2. Step 2: Convert to fraction form
   1,061.22/1,590.11 = 649.50/x
3. Step 3: Cross multiply
   1,061.22x = 1,590.11 × 649.50
4. Step 4: Simplify right side
   1,061.22x = 1,032,768.45
5. Step 5: Solve for x
   x = 1,032,768.45/1,061.22
6. Step 6: Final answer
   x = 973.19