Finding the Fourth Proportional to 1,667.76, 2,501.67 and 435.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.76 : 2,501.67 = 435.15 : x
2. Step 2: Convert to fraction form
   1,667.76/2,501.67 = 435.15/x
3. Step 3: Cross multiply
   1,667.76x = 2,501.67 × 435.15
4. Step 4: Simplify right side
   1,667.76x = 1,088,601.70
5. Step 5: Solve for x
   x = 1,088,601.70/1,667.76
6. Step 6: Final answer
   x = 652.73