Finding the Fourth Proportional to 978,162.70, 1,371,916.10 and 978,162.70

Step by Step Solution

1. Step 1: Write the proportion equation
   978,162.70 : 1,371,916.10 = 978,162.70 : x
2. Step 2: Convert to fraction form
   978,162.70/1,371,916.10 = 978,162.70/x
3. Step 3: Cross multiply
   978,162.70x = 1,371,916.10 × 978,162.70
4. Step 4: Simplify right side
   978,162.70x = 1,341,957,156,549.47
5. Step 5: Solve for x
   x = 1,341,957,156,549.47/978,162.70
6. Step 6: Final answer
   x = 1,371,916.10