Finding the Fourth Proportional to 1,667.95, 2,301.35 and 1,225.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.95 : 2,301.35 = 1,225.08 : x
2. Step 2: Convert to fraction form
   1,667.95/2,301.35 = 1,225.08/x
3. Step 3: Cross multiply
   1,667.95x = 2,301.35 × 1,225.08
4. Step 4: Simplify right side
   1,667.95x = 2,819,331.73
5. Step 5: Solve for x
   x = 2,819,331.73/1,667.95
6. Step 6: Final answer
   x = 1,690.30