Finding the Fourth Proportional to 1,667.45, 2,300.15 and 1,038.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.45 : 2,300.15 = 1,038.08 : x
2. Step 2: Convert to fraction form
   1,667.45/2,300.15 = 1,038.08/x
3. Step 3: Cross multiply
   1,667.45x = 2,300.15 × 1,038.08
4. Step 4: Simplify right side
   1,667.45x = 2,387,748.06
5. Step 5: Solve for x
   x = 2,387,748.06/1,667.45
6. Step 6: Final answer
   x = 1,431.97