Finding the Fourth Proportional to 919,111.53, 1,267,483.37 and 613,200.35

Step by Step Solution

1. Step 1: Write the proportion equation
   919,111.53 : 1,267,483.37 = 613,200.35 : x
2. Step 2: Convert to fraction form
   919,111.53/1,267,483.37 = 613,200.35/x
3. Step 3: Cross multiply
   919,111.53x = 1,267,483.37 × 613,200.35
4. Step 4: Simplify right side
   919,111.53x = 777,221,236,699.76
5. Step 5: Solve for x
   x = 777,221,236,699.76/919,111.53
6. Step 6: Final answer
   x = 845,622.33