Finding the Fourth Proportional to 1,624.61, 2,436.71 and 649.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,624.61 : 2,436.71 = 649.98 : x
2. Step 2: Convert to fraction form
   1,624.61/2,436.71 = 649.98/x
3. Step 3: Cross multiply
   1,624.61x = 2,436.71 × 649.98
4. Step 4: Simplify right side
   1,624.61x = 1,583,809.52
5. Step 5: Solve for x
   x = 1,583,809.52/1,624.61
6. Step 6: Final answer
   x = 974.89