Finding the Fourth Proportional to 1,667.39, 2,300.96 and 921.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.39 : 2,300.96 = 921.34 : x
2. Step 2: Convert to fraction form
   1,667.39/2,300.96 = 921.34/x
3. Step 3: Cross multiply
   1,667.39x = 2,300.96 × 921.34
4. Step 4: Simplify right side
   1,667.39x = 2,119,966.48
5. Step 5: Solve for x
   x = 2,119,966.48/1,667.39
6. Step 6: Final answer
   x = 1,271.43