Finding the Fourth Proportional to 911,861.10, 1,279,404.90 and 911,861.10

Step by Step Solution

1. Step 1: Write the proportion equation
   911,861.10 : 1,279,404.90 = 911,861.10 : x
2. Step 2: Convert to fraction form
   911,861.10/1,279,404.90 = 911,861.10/x
3. Step 3: Cross multiply
   911,861.10x = 1,279,404.90 × 911,861.10
4. Step 4: Simplify right side
   911,861.10x = 1,166,639,559,459.39
5. Step 5: Solve for x
   x = 1,166,639,559,459.39/911,861.10
6. Step 6: Final answer
   x = 1,279,404.90