Finding the Fourth Proportional to 1,061.37, 1,590.03 and 649.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.37 : 1,590.03 = 649.89 : x
2. Step 2: Convert to fraction form
   1,061.37/1,590.03 = 649.89/x
3. Step 3: Cross multiply
   1,061.37x = 1,590.03 × 649.89
4. Step 4: Simplify right side
   1,061.37x = 1,033,344.60
5. Step 5: Solve for x
   x = 1,033,344.60/1,061.37
6. Step 6: Final answer
   x = 973.60