Finding the Fourth Proportional to 1,666.71, 2,300.06 and 920.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.71 : 2,300.06 = 920.70 : x
2. Step 2: Convert to fraction form
   1,666.71/2,300.06 = 920.70/x
3. Step 3: Cross multiply
   1,666.71x = 2,300.06 × 920.70
4. Step 4: Simplify right side
   1,666.71x = 2,117,667.54
5. Step 5: Solve for x
   x = 2,117,667.54/1,666.71
6. Step 6: Final answer
   x = 1,270.57