Finding the Fourth Proportional to 1,667.04, 2,300.34 and 920.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.04 : 2,300.34 = 920.87 : x
2. Step 2: Convert to fraction form
   1,667.04/2,300.34 = 920.87/x
3. Step 3: Cross multiply
   1,667.04x = 2,300.34 × 920.87
4. Step 4: Simplify right side
   1,667.04x = 2,118,314.10
5. Step 5: Solve for x
   x = 2,118,314.10/1,667.04
6. Step 6: Final answer
   x = 1,270.70