Finding the Fourth Proportional to 1,971.03, 2,719.73 and 1,131.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.03 : 2,719.73 = 1,131.77 : x
2. Step 2: Convert to fraction form
   1,971.03/2,719.73 = 1,131.77/x
3. Step 3: Cross multiply
   1,971.03x = 2,719.73 × 1,131.77
4. Step 4: Simplify right side
   1,971.03x = 3,078,108.82
5. Step 5: Solve for x
   x = 3,078,108.82/1,971.03
6. Step 6: Final answer
   x = 1,561.68