Finding the Fourth Proportional to 1,373.76, 2,061.30 and 552.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.76 : 2,061.30 = 552.60 : x
2. Step 2: Convert to fraction form
   1,373.76/2,061.30 = 552.60/x
3. Step 3: Cross multiply
   1,373.76x = 2,061.30 × 552.60
4. Step 4: Simplify right side
   1,373.76x = 1,139,074.38
5. Step 5: Solve for x
   x = 1,139,074.38/1,373.76
6. Step 6: Final answer
   x = 829.17