Finding the Fourth Proportional to 1,145,585.84, 1,580,864.52 and 636,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,585.84 : 1,580,864.52 = 636,320.72 : x
2. Step 2: Convert to fraction form
   1,145,585.84/1,580,864.52 = 636,320.72/x
3. Step 3: Cross multiply
   1,145,585.84x = 1,580,864.52 × 636,320.72
4. Step 4: Simplify right side
   1,145,585.84x = 1,005,936,849,588.85
5. Step 5: Solve for x
   x = 1,005,936,849,588.85/1,145,585.84
6. Step 6: Final answer
   x = 878,098.19