Finding the Fourth Proportional to 1,667.84, 2,501.52 and 917.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.84 : 2,501.52 = 917.58 : x
2. Step 2: Convert to fraction form
   1,667.84/2,501.52 = 917.58/x
3. Step 3: Cross multiply
   1,667.84x = 2,501.52 × 917.58
4. Step 4: Simplify right side
   1,667.84x = 2,295,344.72
5. Step 5: Solve for x
   x = 2,295,344.72/1,667.84
6. Step 6: Final answer
   x = 1,376.24