Finding the Fourth Proportional to 1,648.94, 2,470.79 and 607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.94 : 2,470.79 = 607.50 : x
2. Step 2: Convert to fraction form
   1,648.94/2,470.79 = 607.50/x
3. Step 3: Cross multiply
   1,648.94x = 2,470.79 × 607.50
4. Step 4: Simplify right side
   1,648.94x = 1,501,001.89
5. Step 5: Solve for x
   x = 1,501,001.89/1,648.94
6. Step 6: Final answer
   x = 910.29