Finding the Fourth Proportional to 1,434,914.16, 1,980,106.78 and 891,038.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,914.16 : 1,980,106.78 = 891,038.31 : x
2. Step 2: Convert to fraction form
   1,434,914.16/1,980,106.78 = 891,038.31/x
3. Step 3: Cross multiply
   1,434,914.16x = 1,980,106.78 × 891,038.31
4. Step 4: Simplify right side
   1,434,914.16x = 1,764,350,998,870.74
5. Step 5: Solve for x
   x = 1,764,350,998,870.74/1,434,914.16
6. Step 6: Final answer
   x = 1,229,586.44