Finding the Fourth Proportional to 2,874.86, 4,312.56 and 1,120.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.86 : 4,312.56 = 1,120.00 : x
2. Step 2: Convert to fraction form
   2,874.86/4,312.56 = 1,120.00/x
3. Step 3: Cross multiply
   2,874.86x = 4,312.56 × 1,120.00
4. Step 4: Simplify right side
   2,874.86x = 4,830,045.64
5. Step 5: Solve for x
   x = 4,830,045.64/2,874.86
6. Step 6: Final answer
   x = 1,680.10