Finding the Fourth Proportional to 2,084.47, 3,126.72 and 623.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.47 : 3,126.72 = 623.65 : x
2. Step 2: Convert to fraction form
   2,084.47/3,126.72 = 623.65/x
3. Step 3: Cross multiply
   2,084.47x = 3,126.72 × 623.65
4. Step 4: Simplify right side
   2,084.47x = 1,949,978.93
5. Step 5: Solve for x
   x = 1,949,978.93/2,084.47
6. Step 6: Final answer
   x = 935.48