Finding the Fourth Proportional to 1,594.89, 2,390.72 and 619.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,594.89 : 2,390.72 = 619.65 : x
2. Step 2: Convert to fraction form
   1,594.89/2,390.72 = 619.65/x
3. Step 3: Cross multiply
   1,594.89x = 2,390.72 × 619.65
4. Step 4: Simplify right side
   1,594.89x = 1,481,406.55
5. Step 5: Solve for x
   x = 1,481,406.55/1,594.89
6. Step 6: Final answer
   x = 928.85