Finding the Fourth Proportional to 1,667.76, 2,495.36 and 1,007.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.76 : 2,495.36 = 1,007.28 : x
2. Step 2: Convert to fraction form
   1,667.76/2,495.36 = 1,007.28/x
3. Step 3: Cross multiply
   1,667.76x = 2,495.36 × 1,007.28
4. Step 4: Simplify right side
   1,667.76x = 2,513,526.22
5. Step 5: Solve for x
   x = 2,513,526.22/1,667.76
6. Step 6: Final answer
   x = 1,507.13