Finding the Fourth Proportional to 1,742.16, 2,402.28 and 1,182.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.16 : 2,402.28 = 1,182.72 : x
2. Step 2: Convert to fraction form
   1,742.16/2,402.28 = 1,182.72/x
3. Step 3: Cross multiply
   1,742.16x = 2,402.28 × 1,182.72
4. Step 4: Simplify right side
   1,742.16x = 2,841,224.60
5. Step 5: Solve for x
   x = 2,841,224.60/1,742.16
6. Step 6: Final answer
   x = 1,630.86