Finding the Fourth Proportional to 1,667.35, 2,300.82 and 921.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.35 : 2,300.82 = 921.29 : x
2. Step 2: Convert to fraction form
   1,667.35/2,300.82 = 921.29/x
3. Step 3: Cross multiply
   1,667.35x = 2,300.82 × 921.29
4. Step 4: Simplify right side
   1,667.35x = 2,119,722.46
5. Step 5: Solve for x
   x = 2,119,722.46/1,667.35
6. Step 6: Final answer
   x = 1,271.32