Finding the Fourth Proportional to 1,488.04, 2,228.91 and 939.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.04 : 2,228.91 = 939.94 : x
2. Step 2: Convert to fraction form
   1,488.04/2,228.91 = 939.94/x
3. Step 3: Cross multiply
   1,488.04x = 2,228.91 × 939.94
4. Step 4: Simplify right side
   1,488.04x = 2,095,041.67
5. Step 5: Solve for x
   x = 2,095,041.67/1,488.04
6. Step 6: Final answer
   x = 1,407.92