Finding the Fourth Proportional to 1,152,428.95, 1,590,310.27 and 636,171.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,428.95 : 1,590,310.27 = 636,171.76 : x
2. Step 2: Convert to fraction form
   1,152,428.95/1,590,310.27 = 636,171.76/x
3. Step 3: Cross multiply
   1,152,428.95x = 1,590,310.27 × 636,171.76
4. Step 4: Simplify right side
   1,152,428.95x = 1,011,710,483,411.98
5. Step 5: Solve for x
   x = 1,011,710,483,411.98/1,152,428.95
6. Step 6: Final answer
   x = 877,894.02