Finding the Fourth Proportional to 1,359.63, 1,876.25 and 770.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.63 : 1,876.25 = 770.18 : x
2. Step 2: Convert to fraction form
   1,359.63/1,876.25 = 770.18/x
3. Step 3: Cross multiply
   1,359.63x = 1,876.25 × 770.18
4. Step 4: Simplify right side
   1,359.63x = 1,445,042.77
5. Step 5: Solve for x
   x = 1,445,042.77/1,359.63
6. Step 6: Final answer
   x = 1,062.82