Finding the Fourth Proportional to 1,670.47, 2,306.00 and 1,200.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.47 : 2,306.00 = 1,200.71 : x
2. Step 2: Convert to fraction form
   1,670.47/2,306.00 = 1,200.71/x
3. Step 3: Cross multiply
   1,670.47x = 2,306.00 × 1,200.71
4. Step 4: Simplify right side
   1,670.47x = 2,768,837.02
5. Step 5: Solve for x
   x = 2,768,837.02/1,670.47
6. Step 6: Final answer
   x = 1,657.52