Finding the Fourth Proportional to 2,106,439.50, 3,156,795.42 and 891,005.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106,439.50 : 3,156,795.42 = 891,005.34 : x
2. Step 2: Convert to fraction form
   2,106,439.50/3,156,795.42 = 891,005.34/x
3. Step 3: Cross multiply
   2,106,439.50x = 3,156,795.42 × 891,005.34
4. Step 4: Simplify right side
   2,106,439.50x = 2,812,721,576,507.54
5. Step 5: Solve for x
   x = 2,812,721,576,507.54/2,106,439.50
6. Step 6: Final answer
   x = 1,335,296.64