Finding the Fourth Proportional to 1,667.71, 2,500.86 and 742.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.71 : 2,500.86 = 742.63 : x
2. Step 2: Convert to fraction form
   1,667.71/2,500.86 = 742.63/x
3. Step 3: Cross multiply
   1,667.71x = 2,500.86 × 742.63
4. Step 4: Simplify right side
   1,667.71x = 1,857,213.66
5. Step 5: Solve for x
   x = 1,857,213.66/1,667.71
6. Step 6: Final answer
   x = 1,113.63