Finding the Fourth Proportional to 3,428.02, 5,133.74 and 1,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.02 : 5,133.74 = 1,962.72 : x
2. Step 2: Convert to fraction form
   3,428.02/5,133.74 = 1,962.72/x
3. Step 3: Cross multiply
   3,428.02x = 5,133.74 × 1,962.72
4. Step 4: Simplify right side
   3,428.02x = 10,076,094.17
5. Step 5: Solve for x
   x = 10,076,094.17/3,428.02
6. Step 6: Final answer
   x = 2,939.33