Finding the Fourth Proportional to 1,267,604.82, 1,749,279.72 and 686,816.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267,604.82 : 1,749,279.72 = 686,816.58 : x
2. Step 2: Convert to fraction form
   1,267,604.82/1,749,279.72 = 686,816.58/x
3. Step 3: Cross multiply
   1,267,604.82x = 1,749,279.72 × 686,816.58
4. Step 4: Simplify right side
   1,267,604.82x = 1,201,434,314,753.76
5. Step 5: Solve for x
   x = 1,201,434,314,753.76/1,267,604.82
6. Step 6: Final answer
   x = 947,798.79