Finding the Fourth Proportional to 1,053,795.05, 1,454,272.37 and 645,818.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053,795.05 : 1,454,272.37 = 645,818.06 : x
2. Step 2: Convert to fraction form
   1,053,795.05/1,454,272.37 = 645,818.06/x
3. Step 3: Cross multiply
   1,053,795.05x = 1,454,272.37 × 645,818.06
4. Step 4: Simplify right side
   1,053,795.05x = 939,195,361,111.59
5. Step 5: Solve for x
   x = 939,195,361,111.59/1,053,795.05
6. Step 6: Final answer
   x = 891,250.50