Finding the Fourth Proportional to 1,580,544, 2,181,185.28 and 865,152

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580,544 : 2,181,185.28 = 865,152 : x
2. Step 2: Convert to fraction form
   1,580,544/2,181,185.28 = 865,152/x
3. Step 3: Cross multiply
   1,580,544x = 2,181,185.28 × 865,152
4. Step 4: Simplify right side
   1,580,544x = 1,887,056,807,362.56
5. Step 5: Solve for x
   x = 1,887,056,807,362.56/1,580,544
6. Step 6: Final answer
   x = 1,193,928.68