Finding the Fourth Proportional to 978,485.78, 1,465,818.66 and 674,161.98

Step by Step Solution

1. Step 1: Write the proportion equation
   978,485.78 : 1,465,818.66 = 674,161.98 : x
2. Step 2: Convert to fraction form
   978,485.78/1,465,818.66 = 674,161.98/x
3. Step 3: Cross multiply
   978,485.78x = 1,465,818.66 × 674,161.98
4. Step 4: Simplify right side
   978,485.78x = 988,199,210,146.55
5. Step 5: Solve for x
   x = 988,199,210,146.55/978,485.78
6. Step 6: Final answer
   x = 1,009,927.01