Finding the Fourth Proportional to 1,230,112.95, 1,697,556.59 and 686,248.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230,112.95 : 1,697,556.59 = 686,248.72 : x
2. Step 2: Convert to fraction form
   1,230,112.95/1,697,556.59 = 686,248.72/x
3. Step 3: Cross multiply
   1,230,112.95x = 1,697,556.59 × 686,248.72
4. Step 4: Simplify right side
   1,230,112.95x = 1,164,946,041,462.12
5. Step 5: Solve for x
   x = 1,164,946,041,462.12/1,230,112.95
6. Step 6: Final answer
   x = 947,023.64