Finding the Fourth Proportional to 1,384,861.32, 1,911,427.50 and 812,086.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384,861.32 : 1,911,427.50 = 812,086.08 : x
2. Step 2: Convert to fraction form
   1,384,861.32/1,911,427.50 = 812,086.08/x
3. Step 3: Cross multiply
   1,384,861.32x = 1,911,427.50 × 812,086.08
4. Step 4: Simplify right side
   1,384,861.32x = 1,552,243,665,679.20
5. Step 5: Solve for x
   x = 1,552,243,665,679.20/1,384,861.32
6. Step 6: Final answer
   x = 1,120,865.78