Finding the Fourth Proportional to 1,101,536.38, 1,521,089.58 and 688,780.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101,536.38 : 1,521,089.58 = 688,780.54 : x
2. Step 2: Convert to fraction form
   1,101,536.38/1,521,089.58 = 688,780.54/x
3. Step 3: Cross multiply
   1,101,536.38x = 1,521,089.58 × 688,780.54
4. Step 4: Simplify right side
   1,101,536.38x = 1,047,696,902,300.77
5. Step 5: Solve for x
   x = 1,047,696,902,300.77/1,101,536.38
6. Step 6: Final answer
   x = 951,123.29