Finding the Fourth Proportional to 978,146.70, 1,367,746.50 and 978,146.70

Step by Step Solution

1. Step 1: Write the proportion equation
   978,146.70 : 1,367,746.50 = 978,146.70 : x
2. Step 2: Convert to fraction form
   978,146.70/1,367,746.50 = 978,146.70/x
3. Step 3: Cross multiply
   978,146.70x = 1,367,746.50 × 978,146.70
4. Step 4: Simplify right side
   978,146.70x = 1,337,856,725,411.55
5. Step 5: Solve for x
   x = 1,337,856,725,411.55/978,146.70
6. Step 6: Final answer
   x = 1,367,746.50