Finding the Fourth Proportional to 1,259,501.72, 1,738,112.42 and 686,541.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259,501.72 : 1,738,112.42 = 686,541.88 : x
2. Step 2: Convert to fraction form
   1,259,501.72/1,738,112.42 = 686,541.88/x
3. Step 3: Cross multiply
   1,259,501.72x = 1,738,112.42 × 686,541.88
4. Step 4: Simplify right side
   1,259,501.72x = 1,193,286,960,700.16
5. Step 5: Solve for x
   x = 1,193,286,960,700.16/1,259,501.72
6. Step 6: Final answer
   x = 947,427.82