Finding the Fourth Proportional to 1,664,978.77, 2,297,424.47 and 976,390.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664,978.77 : 2,297,424.47 = 976,390.89 : x
2. Step 2: Convert to fraction form
   1,664,978.77/2,297,424.47 = 976,390.89/x
3. Step 3: Cross multiply
   1,664,978.77x = 2,297,424.47 × 976,390.89
4. Step 4: Simplify right side
   1,664,978.77x = 2,243,184,306,602.00
5. Step 5: Solve for x
   x = 2,243,184,306,602.00/1,664,978.77
6. Step 6: Final answer
   x = 1,347,275.02