Finding the Fourth Proportional to 1,030.95, 1,422.71 and 611.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.95 : 1,422.71 = 611.51 : x
2. Step 2: Convert to fraction form
   1,030.95/1,422.71 = 611.51/x
3. Step 3: Cross multiply
   1,030.95x = 1,422.71 × 611.51
4. Step 4: Simplify right side
   1,030.95x = 869,998.38
5. Step 5: Solve for x
   x = 869,998.38/1,030.95
6. Step 6: Final answer
   x = 843.88