Finding the Fourth Proportional to 988,855.86, 1,364,647.86 and 559,200

Step by Step Solution

1. Step 1: Write the proportion equation
   988,855.86 : 1,364,647.86 = 559,200 : x
2. Step 2: Convert to fraction form
   988,855.86/1,364,647.86 = 559,200/x
3. Step 3: Cross multiply
   988,855.86x = 1,364,647.86 × 559,200
4. Step 4: Simplify right side
   988,855.86x = 763,111,083,312
5. Step 5: Solve for x
   x = 763,111,083,312/988,855.86
6. Step 6: Final answer
   x = 771,711.14