Finding the Fourth Proportional to 1,667.93, 2,501.70 and 693.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.93 : 2,501.70 = 693.91 : x
2. Step 2: Convert to fraction form
   1,667.93/2,501.70 = 693.91/x
3. Step 3: Cross multiply
   1,667.93x = 2,501.70 × 693.91
4. Step 4: Simplify right side
   1,667.93x = 1,735,945.79
5. Step 5: Solve for x
   x = 1,735,945.79/1,667.93
6. Step 6: Final answer
   x = 1,040.78