Finding the Fourth Proportional to 1,152,495.63, 1,590,402.20 and 636,238.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,495.63 : 1,590,402.20 = 636,238.44 : x
2. Step 2: Convert to fraction form
   1,152,495.63/1,590,402.20 = 636,238.44/x
3. Step 3: Cross multiply
   1,152,495.63x = 1,590,402.20 × 636,238.44
4. Step 4: Simplify right side
   1,152,495.63x = 1,011,875,011,519.38
5. Step 5: Solve for x
   x = 1,011,875,011,519.38/1,152,495.63
6. Step 6: Final answer
   x = 877,985.99