Finding the Fourth Proportional to 1,667.59, 2,300.40 and 1,038.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.59 : 2,300.40 = 1,038.02 : x
2. Step 2: Convert to fraction form
   1,667.59/2,300.40 = 1,038.02/x
3. Step 3: Cross multiply
   1,667.59x = 2,300.40 × 1,038.02
4. Step 4: Simplify right side
   1,667.59x = 2,387,849.71
5. Step 5: Solve for x
   x = 2,387,849.71/1,667.59
6. Step 6: Final answer
   x = 1,431.92