Finding the Fourth Proportional to 1,667.35, 2,298.37 and 1,247.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.35 : 2,298.37 = 1,247.07 : x
2. Step 2: Convert to fraction form
   1,667.35/2,298.37 = 1,247.07/x
3. Step 3: Cross multiply
   1,667.35x = 2,298.37 × 1,247.07
4. Step 4: Simplify right side
   1,667.35x = 2,866,228.28
5. Step 5: Solve for x
   x = 2,866,228.28/1,667.35
6. Step 6: Final answer
   x = 1,719.03