Finding the Fourth Proportional to 1,889.63, 2,607.71 and 1,061.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,889.63 : 2,607.71 = 1,061.63 : x
2. Step 2: Convert to fraction form
   1,889.63/2,607.71 = 1,061.63/x
3. Step 3: Cross multiply
   1,889.63x = 2,607.71 × 1,061.63
4. Step 4: Simplify right side
   1,889.63x = 2,768,404.82
5. Step 5: Solve for x
   x = 2,768,404.82/1,889.63
6. Step 6: Final answer
   x = 1,465.06