Finding the Fourth Proportional to 1,667.13, 2,300.52 and 921.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.13 : 2,300.52 = 921.03 : x
2. Step 2: Convert to fraction form
   1,667.13/2,300.52 = 921.03/x
3. Step 3: Cross multiply
   1,667.13x = 2,300.52 × 921.03
4. Step 4: Simplify right side
   1,667.13x = 2,118,847.94
5. Step 5: Solve for x
   x = 2,118,847.94/1,667.13
6. Step 6: Final answer
   x = 1,270.96