Finding the Fourth Proportional to 2,100.46, 3,150.80 and 802.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.46 : 3,150.80 = 802.03 : x
2. Step 2: Convert to fraction form
   2,100.46/3,150.80 = 802.03/x
3. Step 3: Cross multiply
   2,100.46x = 3,150.80 × 802.03
4. Step 4: Simplify right side
   2,100.46x = 2,527,036.12
5. Step 5: Solve for x
   x = 2,527,036.12/2,100.46
6. Step 6: Final answer
   x = 1,203.09