Finding the Fourth Proportional to 890,213.47, 1,333,798.86 and 636,196.15

Step by Step Solution

1. Step 1: Write the proportion equation
   890,213.47 : 1,333,798.86 = 636,196.15 : x
2. Step 2: Convert to fraction form
   890,213.47/1,333,798.86 = 636,196.15/x
3. Step 3: Cross multiply
   890,213.47x = 1,333,798.86 × 636,196.15
4. Step 4: Simplify right side
   890,213.47x = 848,557,703,659.37
5. Step 5: Solve for x
   x = 848,557,703,659.37/890,213.47
6. Step 6: Final answer
   x = 953,206.99