Finding the Fourth Proportional to 1,667.35, 2,502.57 and 846.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.35 : 2,502.57 = 846.21 : x
2. Step 2: Convert to fraction form
   1,667.35/2,502.57 = 846.21/x
3. Step 3: Cross multiply
   1,667.35x = 2,502.57 × 846.21
4. Step 4: Simplify right side
   1,667.35x = 2,117,699.76
5. Step 5: Solve for x
   x = 2,117,699.76/1,667.35
6. Step 6: Final answer
   x = 1,270.10