Finding the Fourth Proportional to 1,667.58, 2,501.16 and 434.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.58 : 2,501.16 = 434.88 : x
2. Step 2: Convert to fraction form
   1,667.58/2,501.16 = 434.88/x
3. Step 3: Cross multiply
   1,667.58x = 2,501.16 × 434.88
4. Step 4: Simplify right side
   1,667.58x = 1,087,704.46
5. Step 5: Solve for x
   x = 1,087,704.46/1,667.58
6. Step 6: Final answer
   x = 652.27