Finding the Fourth Proportional to 2,875.86, 4,314.06 and 1,121

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.86 : 4,314.06 = 1,121 : x
2. Step 2: Convert to fraction form
   2,875.86/4,314.06 = 1,121/x
3. Step 3: Cross multiply
   2,875.86x = 4,314.06 × 1,121
4. Step 4: Simplify right side
   2,875.86x = 4,836,061.26
5. Step 5: Solve for x
   x = 4,836,061.26/2,875.86
6. Step 6: Final answer
   x = 1,681.61