Finding the Fourth Proportional to 1,602.72, 2,210.98 and 939.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.72 : 2,210.98 = 939.16 : x
2. Step 2: Convert to fraction form
   1,602.72/2,210.98 = 939.16/x
3. Step 3: Cross multiply
   1,602.72x = 2,210.98 × 939.16
4. Step 4: Simplify right side
   1,602.72x = 2,076,463.98
5. Step 5: Solve for x
   x = 2,076,463.98/1,602.72
6. Step 6: Final answer
   x = 1,295.59