Finding the Fourth Proportional to 1,667.35, 2,499.07 and 1,255.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.35 : 2,499.07 = 1,255.15 : x
2. Step 2: Convert to fraction form
   1,667.35/2,499.07 = 1,255.15/x
3. Step 3: Cross multiply
   1,667.35x = 2,499.07 × 1,255.15
4. Step 4: Simplify right side
   1,667.35x = 3,136,707.71
5. Step 5: Solve for x
   x = 3,136,707.71/1,667.35
6. Step 6: Final answer
   x = 1,881.25