Finding the Fourth Proportional to 1,667.79, 2,501.94 and 802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.79 : 2,501.94 = 802.10 : x
2. Step 2: Convert to fraction form
   1,667.79/2,501.94 = 802.10/x
3. Step 3: Cross multiply
   1,667.79x = 2,501.94 × 802.10
4. Step 4: Simplify right side
   1,667.79x = 2,006,793.56
5. Step 5: Solve for x
   x = 2,006,793.56/1,667.79
6. Step 6: Final answer
   x = 1,203.27