Finding the Fourth Proportional to 1,373.77, 2,061.33 and 552.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.77 : 2,061.33 = 552.61 : x
2. Step 2: Convert to fraction form
   1,373.77/2,061.33 = 552.61/x
3. Step 3: Cross multiply
   1,373.77x = 2,061.33 × 552.61
4. Step 4: Simplify right side
   1,373.77x = 1,139,111.57
5. Step 5: Solve for x
   x = 1,139,111.57/1,373.77
6. Step 6: Final answer
   x = 829.19